
Spoiler Warning: There are spoilers ahead for Star Trek: Discovery Seasons 1-3, Star Trek: Picard Season 1, and for other iterations of the Star Trek franchise.
During Star Trek: Discovery’s third season, I wrote a weekly series of theories, speculating about what may be going on with the show’s various storylines. I had some successes in my theories and predictions, but there were more than a few misses as well! Now that the season is in the rear-view mirror, I thought it could be fun to go back to some of my theories and see how wrong I was!
All of these theories seemed plausible at the time – for one reason or another – yet ultimately proved to be way off base. One thing I appreciate about Discovery – and a lot of other shows and films too, both within the Star Trek franchise and outside of it – is that sense of unpredictability. Nothing in Discovery Season 3 was mundane or felt like it had been blatantly telegraphed ahead of time, and the fact that the narrative took twists and turns that I wasn’t expecting was, on the whole, great! There were a couple of storylines I personally didn’t think were fantastic or handled very well, but on the whole, Discovery’s third season was an enjoyable ride.

Some of the theories I had were pure speculation based on nothing more than guesswork and intuition, and others seemed truly reasonable and plausible. While the season was ongoing I tended to just write up any theories I had, no matter how wild or out of left-field they seemed to be! Whether that was good or not… well the jury is out! The theory lists I published were well-read, so I assume at least some folks found something of interest!
I like to caveat these kinds of articles by saying that no fan theory, no matter how plausible or rational it may seem to be, is worth getting too attached to or upset about. The internet has been great for fan communities, allowing us to come together to discuss our favourite franchises and engage in a lot of theory-crafting. But there is a darker side to all of this, and some fans find themselves getting too attached to a particular theory to the point where their enjoyment of the actual narrative is diminished if that theory doesn’t pan out. Please try to keep in mind that I don’t have any “insider information,” and I’ve never tried to claim that a particular theory is somehow guaranteed to come true. I like writing, I like Star Trek, and writing about Star Trek is a fun activity for me – that’s why I do this, and if I ever felt that theorising about Discovery or other shows was harming my enjoyment, I would stop. And I encourage you to take a step back if you find yourself falling into that particular trap.
With that out of the way, let’s take a look at ten of my least successful Star Trek: Discovery Season 3 theories!
Number 1: Cleveland Booker is a Coppelius synth.

When we met Book in That Hope Is You at the beginning of the season, it wasn’t at all clear who he was. However, there were inhuman elements to Book, such as his ability to heal, to use a holographic interface seemingly attached to his body, and glowing, almost electronic-looking areas on parts of his skin. With Book’s origin somewhat of a mystery, I wondered if he might turn out to be a synth – and specifically, a synth from the planet Coppelius (or one of their descendants).
We met the Coppelius synths in Star Trek: Picard Season 1, and I was hopeful as Discovery’s third season got underway that there’d be a serious attempt to connect the two shows – as this was something Picard wholly failed to do in its debut season. I’ve said numerous times that Star Trek needs to do more to bind different parts of the franchise together, and after Picard basically ignored Discovery, I was hoping for some kind of connection to manifest in Season 3. Booker being a synth could have been one way to do that.

So really, it’s not unfair to say that this theory was concocted more for production-side reasons than anything we saw on screen. Book’s abilities as we saw them in That Hope Is You (and subsequently in episodes like The Sanctuary, There Is A Tide, and That Hope Is You, Part 2) were clearly more organic and telepathic than anything artificial or technological in origin – except for his holographic computer interface. So perhaps this was always a bit of a stretch!
Booker turned out to be a Kwejian native – though what exactly that means is unclear. Given Book’s human appearance, it’s possible that the people of Kwejian are descendants or offshoots of humanity, or perhaps, given their telepathic nature, they’re somehow related to the Betazoids. In the season finale, Book promised Burnham he’d tell her more about his background, and how he came to use the name Cleveland Booker, so perhaps we’ll learn more about Book’s people in Season 4. He was a wonderful addition to the season, even if I was way off base with my theory about his possible origin!
Number 2: The Burn is connected to Michael Burnham – and/or the Red Angel suit.

The Burn’s origin was not definitively revealed and confirmed until the season finale, so for practically the entire season I was talking about some form of this theory! There seemed to be a few possible clues that Discovery gave us – which ultimately turned out to be red herrings as the Burn was unconnected to any of them – about the ultimate answer to the Burn, and several of them could have been interpreted to mean that Burnham was, in some way, connected to the event that shares part of her name.
The main reason I considered this theory plausible, though, was because Discovery has always been a series that put Burnham front-and-centre in all of its main storylines. Having a connection to the biggest story of the season thus seemed possible. When the event’s name was revealed, the fact that it shared part of her name seemed to lend credence to that idea – at least it did considering I’d already started down that rabbit hole!

That Hope Is You saw Burnham arrive in the future immediately following the events of Such Sweet Sorrow, Part 2 – the Season 2 finale. She took off her Red Angel suit and set it to self-destruct, but as we never saw the self-destruction for ourselves on screen, it was a bit of a mystery as to what became of the suit. In a future where time travel technology had been prohibited, the Red Angel suit may have been one of the last extant ways to travel through time, and would be incredibly valuable to factions like the Emerald Chain, so I reasoned that perhaps someone had intercepted the suit, and either intentionally or unintentionally caused the Burn.
I’m glad this one didn’t pan out, because it was nice to give Burnham a break! In the end, Burnham wasn’t strongly involved in the resolution to the Burn’s storyline, with that task being given to Saru, Dr Culber, Adira, and of course Su’Kal. After Burnham had just saved the galaxy by defeating the Control AI, there would have been an interesting ethical and philosophical dilemma for her if she had learned that her actions and/or the Red Angel suit had been responsible for the Burn – but it would’ve been hard to pull off and arguably too similar to the guilt she felt at the outbreak of the Federation-Klingon War in Season 1. So overall, it was an interesting theory well worth considering, but I’m glad it wasn’t true!
Number 3: The USS Discovery could arrive in the future before Burnham.

Time travel stories are complicated. Once the link between cause and effect is broken, almost anything becomes possible. Even though Burnham and the Red Angel suit were leading the way into the future, the mechanics of the time wormhole were not explained, and it was at least plausible to think that the USS Discovery might’ve arrived first.
I first posited this theory after the season premiere, and it seemed plausible for practically all of Far From Home too. One thing that could’ve happened, had this theory been correct, would be that Burnham would’ve been out of her element for a lot longer than just one episode. In That Hope Is You, we saw her completely awed by everything she saw, experiencing a completely new world for the first time. And that premise meant that we were seeing Burnham in a whole new way, not in control of the situation and having to rely on others instead of trying to shoulder all of the burden all of the time. Had the USS Discovery found her after the ship and crew had spent a year in the future instead of the other way around, Burnham could’ve been our point-of-view character for learning what was new and different, instead of reverting to type.

With both Red Angel suits gone, I doubt we’ll see the time-wormholes they could generate ever return either. But it would be interesting to get to know a little more about how that technology worked – would it even have been possible for the USS Discovery to arrive earlier than Burnham? Burnham arrived on the planet Hima, and Discovery arrived near a planet called the Colony, so considering the wormhole had two different exit points it seems possible to me anyway!
Because of the one-year time skip, we didn’t get to see much of Burnham’s exploits with Book in the 32nd Century prior to Discovery’s arrival. It would have been interesting to see either Burnham or the crew trying to learn more about their new home and the origins of the Burn, because in some ways it could be argued that we as the audience arrived with the first part of a story already complete. I kind of want to see that part for myself – and maybe we will in flashbacks in future seasons!
Number 4: Lieutenant Detmer is going to die.

One of my hopes going into Season 3 was that Discovery would finally spend some time with other members of the crew, and I was pleased that it happened. After two full seasons I felt that we hadn’t really got to know anything about people like Owosekun, Rhys, and Detmer, despite their being permanent fixtures on the bridge. Though not all of the less-prominent officers got big storylines this season, one who did was Detmer.
In the episode Far From Home, Detmer was thrown from her seat following the ship’s crash-landing. Concussed, she was sent to sickbay where, after a once-over, she was patched up and returned to work. However, there were hints – at least, what I considered to be hints – that all was not well with Discovery’s helm officer, and I wondered if her first significant storyline might in fact be the setup to her death. There just seemed to be so much foreshadowing!

Ultimately, however, Detmer’s storyline took a different path. I appreciate what it was trying to be – an examination of post-traumatic stress that ended with a positive and uplifting message showing Detmer “getting over it,” for want of a better expression – but because it wasn’t properly fleshed-out after Far From Home, with Detmer only given a handful of very brief scenes before her big turnaround in The Sanctuary, I just felt it was underdeveloped and didn’t quite hit the notes it wanted to. So despite a potentially interesting premise, the execution let this storyline down somewhat.
Especially after the way she was acting in Far From Home, I can’t have been the only one to predict an untimely end for Detmer! I heard several other theories that I considered to be very “out there,” such as Detmer’s implant being possessed by Control in the same manner as Ariam had been in Season 2, but I firmly believed the setup was foreshadowing her death due to injury rather than something of that nature. It’s probably good that it didn’t happen, as it leaves her a slightly more rounded character if the show wants to do more with her in future. However, there were several officers in the final trio of episodes who could’ve been killed off after the ship was captured by the Emerald Chain, including Detmer, and it feels somewhat like Discovery was playing it safe by not doing so. Aside from Ryn, no major hero characters lost their lives in Season 3, and while character deaths aren’t something I desperately want in a show like this, they can certainly raise the stakes.
Number 5: The Doctor from Star Trek: Voyager (or rather, a backup copy of him) will make an appearance.

This was my most popular pre-season theory! I stuck with it practically the whole time, and branched out to include a handful of other characters from past iterations of Star Trek who could, in theory, still be alive by the 32nd Century. By the standards of my modest website, an absolutely huge number of you read this theory – and it continues to be popular even today, despite the season having concluded months ago. So I wasn’t the only one half-guessing, half-hoping that the Doctor might be included in Discovery!
The reason why I considered the Doctor to be one of the most plausible characters who could make an appearance is because of an episode from Voyager’s fourth season: Living Witness. In that episode, a backup copy of the Doctor was activated sometime in the 30th or 31st Centuries after being discovered among museum artefacts, and while the story was interesting in its own right and a critique of how things we consider to be “historical facts” can shift over time, what really interested me was its timeframe and its ending.

At the end of Living Witness, in a scene set even farther into the future, it was revealed that, after living with the Kyrians and Vaskans in the Delta Quadrant for decades, the Doctor eventually took a small ship and set out to try to reach Earth. If he had survived and completed his journey, he could’ve reached Earth in the years prior to the arrival of Burnham and Discovery. The timelines lined up for a possible crossover.
However, it wasn’t to be! Though we did see the return of the Guardian of Forever, which had originally appeared in The Original Series, no major characters from any other Star Trek show made an appearance. Perhaps the producers and writers felt that, with Seven of Nine carrying the torch for Voyager with her appearances in Season 1 of Picard, including a second main character from Voyager in a new show would’ve been too much, or at least that the timing was wrong. Regardless, I think it would’ve been amazing to see, and despite this theory failing to pan out in Season 3, it’s one I may very well bring back in time for Season 4!
Number 6: There will be a resolution to the story of the Short Treks episode Calypso.

Poor Calypso. I’m beginning to feel that the Short Treks episode is doomed to be a permanent outlier in the Star Trek canon, evidently connected to a version of Season 2 that never made it to screen. Broadcast in the months before Discovery’s second season, Calypso introduced us to Craft, a soldier from the far future fighting a war against the “V’draysh.” We also got to meet Zora, an AI who was the sole inhabitant of a long-abandoned USS Discovery.
Here’s where things get confusing. Season 3 saw some moves toward Calypso, including the apparent creation of Zora from a merger of the Sphere data with Discovery’s computer. The voice actress from Calypso even reprised her role, although the name “Zora” wasn’t mentioned. We also heard the villainous Zareh use the term “V’draysh” to refer to the rump Federation – seemingly confirming that Calypso must be set in roughly this same era.

However, we also saw some big moves away from Calypso as well. The most significant one is that the USS Discovery has undergone a refit. While this isn’t readily apparent from the ship’s interior – something I really hope changes in Season 4 – it was very apparent from the exterior of the ship. Calypso showed off a pre-refit Discovery, which means that resolving the story of this short episode feels further away than ever.
As I mentioned in the intro, it seems clear that Calypso was originally written with a different version of Season 2 in mind – perhaps even to serve as a kind of epilogue in the event that Season 2 would be Discovery’s last. Even going into Such Sweet Sorrow – the two-part finale of Season 2 – the possibility of hiding the ship in a nebula, as depicted in Calypso, existed, and with a few changes and tweaks to the season finale, Calypso would have been a natural epilogue to that story. That’s what I think happened on the production side of things, anyway. With the storyline of Season 2 up in the air, a somewhat ambiguous short episode was created to serve as a potential epilogue if the show was cancelled. Discovery wasn’t cancelled, though, and now the writers have to find a way to square this particularly tricky circle. Or they might just try to ignore it!
Number 7: The Spore Drive will become Starfleet’s new method of propulsion.

When it became apparent that warp drive in the 32nd Century was very difficult due to the lack of dilithium and the aftereffects of the Burn, I thought the writers and producers of Discovery had played a masterstroke by finally finding a way for the show’s most controversial piece of technology to play a major role.
The Spore Drive, which was introduced in Season 1, received a mixed reaction from fans. Some insisted that it “violates canon” by allowing a 23rd Century starship to effectively travel anywhere in the galaxy, and others wondered why the technology had never been mentioned in settings where it would have logically been useful – such as to the crew of the USS Voyager, stranded tens of thousands of light-years from home! Though I would suggest that many of the fans who felt this way about the Spore Drive also had other gripes with Discovery, by pushing forward in time there was an opportunity to expand the role of the Spore Drive in a way that wouldn’t undermine anything in Star Trek’s established canon.

The dilithium shortage the galaxy is experiencing, made a hundred times worse by the Burn, seemed to offer an opportunity to expand the role of the Spore Drive. And at first, Starfleet did seem to be keen on making use of it. However, despite Discovery’s extensive retrofit, the Spore Drive remained aboard the ship and Starfleet seems to have made no attempt to copy it or roll it out to any of their other vessels. The huge planet-sized cache of dilithium in the Verubin Nebula has also solved – at least in the short-term – the galaxy’s fuel problem, so there’s less of a need from Starfleet’s perspective to invest in recreating the Spore Drive, despite its seemingly unlimited potential.
Perhaps this will be picked up in Season 4, especially with Book’s ability to use the Spore Drive getting around the last hurdle in the way of a broader rollout. There was potential, I felt, for the dilithium shortage and Burn storylines to parallel real world climate change and how we’re slowly running out of oil, but the Verubin Nebula’s dilithium planet kind of squashed any real-world analogy! Again, though, this is something that could potentially return in Season 4.
Number 8: Dr Issa is a descendant of Saru’s sister Siranna.

The Short Treks episode The Brightest Star was broadcast in between Seasons 1 and 2, and introduced us to Saru’s sister Siranna. She returned in Season 2, in the episodes The Sound of Thunder and Such Sweet Sorrow, Part 2. In Season 3, the same actress who played Siranna also appeared as Dr Issa – the commander of the crashed Kelpien ship in the Verubin Nebula and the mother of Su’Kal.
Because of this production-side coincidence, as well as Saru’s incredibly strong reaction to seeing Dr Issa in holographic form, I speculated that Dr Issa could be a descendant of Siranna, and thus a great-great-niece to Saru. That familial tie could have explained why Saru found himself so emotionally compromised during the final few episodes of the season, and why he risked everything to help Su’Kal.

However, it seems that this was little more than casting coincidence! Perhaps it was easier for the producers to work with someone who was already familiar with the Kelpiens – and Kelpien prosthetic makeup – instead of casting a new actress for the role. Or perhaps it was deliberate – presenting Saru with someone superficially similar to Siranna to push him emotionally. Regardless, this theory didn’t pan out.
It could have been interesting to see Saru coming face-to-face with a distant relative, and it could’ve added to the Su’Kal storyline. However, in the time allotted to Saru’s exploits in the Verubin Nebula, it would have been difficult to add this additional emotional element and have it properly developed, so perhaps it’s for the best!
Number 9: The holographic “monster” is either Dr Issa or the real Su’Kal.

The episode Su’Kal pushed hard for a creepy “haunted castle” aesthetic when depicting Su’Kal’s holographic world, and a big part of that was the holographic “monster.” The monster seemed like a very odd inclusion in a holo-programme designed for a young child, and even though an attempt was made to excuse it by saying it was an old Kelpien legend, I wasn’t convinced that there wasn’t something else going on.
Additionally, the monster didn’t behave or appear like any of the other decaying holograms. After decades of continuous use, Su’Kal’s holographic world was falling apart. Many of the holograms were flickering or fading, and they were quite basic in what they could say or do. In contrast, the monster moved with a natural, organic fluidity, and didn’t flicker or appear in any way artificial – even as the holographic world disintegrated around it.

The Verubin Nebula’s radiation was said to be fatal, but in horror and sci-fi radiation is often seen to cause mutations. Given the monster’s vaguely Kelpien appearance and dishevelled, decrepit, morbid look, I wondered if it was actually the real Su’Kal – or Dr Issa – having mutated and decayed after decades in the hostile nebula. The final piece of evidence I added to this little pile was the strange way that the monster interacted with Burnham in the episode Su’Kal – it seemed curious about her, perceiving her in a way I thought was almost human.
Despite all of that, however, the monster turned out to be exactly what the crew believed it to be: just another part of the holo-programme. This theory was quite “out there,” as it would’ve been a big twist on what we as the audience were expecting. There were hints that I felt could have built up the monster to be something more, but ultimately these turned out to be red herrings!
Number 10: Season 3 is taking place in an alternate timeline or parallel universe.

Over the course of the first two-thirds or so of Season 3, there seemed to be breadcrumbs that at least hinted at the possibility that Burnham and Discovery had crossed over to a parallel universe or alternate timeline. The biggest one was the initial absence of Dr Gabrielle Burnham, but there was also the strange piece of music that seemed to be connected to the Burn, the fact that the time-wormhole didn’t take Burnham and the ship to their intended destination of Terralysium, and a couple of hints from Voyager (as mentioned above) and Enterprise that could have been interpreted to mean the Burn never happened in the timeline depicted in those older shows.
There was also the possibility that the Burn was caused by the interference of time travellers. The resolution to that storyline could have been for Burnham and Discovery to go back in time and prevent the Burn from ever happening – restoring the “true” timeline and undoing the Burn. Both of these theories seemed plausible for much of the season.

I’m glad, though, that neither theory came to pass! “It’s a parallel universe” is almost akin to “it was all a dream” in terms of being a pretty lazy excuse for storylines in sci-fi, and the idea of undoing the Burn, while interesting in theory, would have effectively wiped out all of the good deeds Saru, Burnham, and the crew did across Season 3, like helping the peoples of Trill, Earth, Ni’Var, and Kwejian. So it was to the show’s overall benefit to stick firmly to the prime timeline.
Doing so is actually rather bold. Discovery took Star Trek to some very different thematic places in Season 3, largely thanks to the Burn and its lingering effects, and I could understand the temptation to brush all of that aside. We still got some parallel universe action in the two-part episode Terra Firma, which revisited the Mirror Universe. With the Burn now in the rear-view mirror and Discovery moving on to new adventures, perhaps it will be possible for Star Trek to establish the 32nd Century as a major new setting, allowing Discovery Season 3 to be the springboard for a host of new shows and films.
So that’s it. Ten of my worst Discovery Season 3 theories!

Though we can debate some of the story points across Season 3 – and I still haven’t written my big piece about the Burn yet – overall I think Season 3 did a good job of establishing the show in its new setting. The Burn presented a tantalising mystery to solve, and for the first time in the series, it felt as though more members of the crew had significant roles to play in the season’s main storylines.
With Burnham having ascended to the captain’s chair, and a new threat seemingly having reared its head, Season 4 is going to take Discovery to different places yet again. And if there are theories to be crafted – and I daresay there will be – I’ll be writing them up! Even though a lot of the theories I came up with in Season 3 didn’t pan out, I had a blast thinking them up and writing them down. At the end of the day, it’s an excuse to spend more time thinking and talking about Star Trek.
So I hope this look back was a bit of fun! Stay tuned, because as and when we get news about Season 4 I’ll be taking a look here on the website, and when the season premieres later this year I’ll be reviewing every episode… and probably coming up with a few more theories!
Star Trek: Discovery Season 3 is available to stream now in its entirety on Paramount+ in the United States, and on Netflix in the United Kingdom and elsewhere. The Star Trek franchise – including Discovery and all other properties mentioned above – is the copyright of ViacomCBS. This article contains the thoughts and opinions of one person only and is not intended to cause any offence.