Board Thread:General Discussion/@comment-9346948-20150520010618/@comment-24565974-20150521010142

I honestly think that Killer Frost is the Caitlin from the timeline where Eobard killed Cisco and the tsunami destroyed the city, so she goes insane at that and reactivates the particle accellerator to try to give herself powers to stop the crazy meta-humans (Because the Flash disappeared in that timeline) but she herself goes insane. The blackhole would help her get to the current timeline, though.