Coming into Season 2 of The Flash, all we knew was that Barry (Grant Gustin) had run into the singularity that opened over Central City and the executive producers teased that there would be a fun, new way that the show was going to introduce the villains for its sophomore year. It turned out that the singularity caused 52 breaches to open on Earth-1, creating doorways for Zoom (Teddy Sears) and tons of other Earth-2 metahumans to come through and terrorize the Scarlet Speedster.

This year, we all knew that after Barry had saved his mother, we’d be introduced to Flashpoint–an alternate timeline where Wally (Keiynan Lonsdale) was The Flash and Barry didn’t know any of his friends. As we all saw last week, though, Barry asked the Reverse Flash (Matt Letscher) to kill his mom again so the timeline could be restored. However, he learned that not everything was back to normal as Iris (Candice Patton) and Joe (Jesse L. Martin) aren’t speaking to each other.

It was revealed at San Diego Comic-Con in July that one of the two Big Bads this season was going to be Dr. Alchemy (Tobin Bell). At the end of the Season 3 premiere, we saw him wake Edward Clariss (Todd Lasance) from his sleep as he scratched his name on a mirror. In Flashpoint, Clariss was a speedster known as The Rival. Joe shot him after he severely wounded Wally. In the “Big Mistake” trailer that was released just hours after the episode aired last week, we see Clariss as The Rival, once again, taking on Barry. How is this possible? Executive producer Todd Helbing talked to Entertainment Weekly and revealed some tantalizing information about the new doc in town:

'The Flash' Unveils New Logo for Season 4

“…[H]e is one of the first villains that’s not a speedster, so that automatically makes him different. But, he has this thing called the Philosopher’s Stone and what he’s starting to do is he has the ability to give people the powers that they had in Flashpoint. So, you’ll start to see how that affects Barry, especially, and the team and how that’s going to play out through the rest of the season.”

Mystery solved…but that definitely brings up more questions than it does answers. Helbing explains that Alchemy “knows about” and “has memories of” Flashpoint. So far on the show, though, the only people we’ve seen be able to retain memories of other timelines are speedsters and Cisco (Carlos Valdes)…and presumably, his doppelgänger, Reverb. As far as we know, Alchemy isn’t any of those so it’ll be interesting to see how he knows about the alternate timeline.

Who else, though, is going to become a pawn in his chess game? There are several different characters we can look at.

The first two are Mirror Master (Grey Damon) and The Top (Ashley Rickards) who will both be appearing in episode 3×04, ‘The New Rogues’. When Damon was cast, the character description read: “Upon discovering he now has the power to travel through any reflective surface, Scudder embarks on a massive crime spree to prove himself the greatest thief that Central City has ever seen.” Sure sounds like he (and most likely, his girlfriend, as well) suddenly found themselves with superpowers one day very recently. Were they the same criminal masterminds in Flashpoint and we just didn’t see them? Very possible.

Arrowverse Crossover: "Crisis on Earth X"

Two other obvious options: Wally West and Jesse Wells (Violett Beane). We know Jesse will be coming back to Earth-1 in episode 3×03, ‘Magenta’, with speedster powers of her own but did Flashpoint affect Earth-2, as well? That’s still unclear but Helbing did have this to say about Jesse: “[Her powers] just sort of manifested, so she’s new at this.” Again, due to this mysterious response, it wouldn’t be surprising to find out that she was one of Alchemy’s victims.

Any info about Wally, on the other hand (after a major press push when it was announced that he’ll be suiting up as Kid Flash in Season 3), is being kept in the dark. When asked if we’ll be seeing Kid Flash again in the future, Helbing responded “Possibly.” Because of Alchemy’s game plan, it would only make sense for Wally to regain his powers. For now, though, we’ll just have to wait and see what happens.

Finally, there’s the matter of Dr. Caitlin Snow (Danielle Panabaker). In ‘Flashpoint’, we learned that she was a pediatric ophthalmologist. Simple and honest enough. However, in the trailer for tomorrow’s episode, ‘Paradox’, there’s a very distinctive shot of her with frost covering hands (resembling the abilities of her Earth-2 doppelgänger, Killer Frost). She looks scared–as if she has no idea how this happened. Every fan has their theory, but due to this new information, connecting her to Alchemy sounds fairly logical…but Caitlin wasn’t Killer Frost in Flashpoint…or was she and we just weren’t told?

'The Flash' Unveils New Logo for Season 4

No matter what happens, it’s looking like tomorrow’s episode (and the rest of the season) are going to be can’t-miss television that I know I am extremely excited for. Make sure to tune in to ‘Paradox’ on October 11th, 8/7c on The CW.