The Flash Season 3: 10 Big Questions We're Asking After 'Paradox'
9. Killer Frost, Is That You?
As Barry says, Caitlin is the one character who seems to have been left largely unchanged in either of the new timelines he's created. Or so it appears, anyway.
However, things take a chilling turn when it's later revealed to viewers that Caitlin has been keeping a pretty major secret: she's seemingly developed powers much like Earth-2's Killer Frost.
It's maybe not that big a surprise, given the leak of Kevin Smith's episode as being named after the character, but it does pose some interesting questions.
Is Caitlin just developing her powers now, or has she had them for a while in this timeline? And either way, how advanced are they? She still seems like the same old Caitlin (apart from the cool abilities), so will she embrace being a metahuman and become part of the team, or a villain like her doppelganger? Things could be about to get frosty.