Now its very difficult time for Barry. he have to fight his own friend for sake of others. and the killer frost is also have meta human power like other super humans. in the synopsis its predicted that the flash may refuse to fight with killer frost.
Tells Caitlin is the actor who is plying role of the killer frost. and she is old friend of Barry Allen. she tries to convince Barry Allen that he is messing with everyone’s life.
next week the promo was released. the promo is more focus on Cailin. in the sneak peak of the episode 6 its shown that Cailin stabbed Barry. in the episode 7 Cailin is fully transformed into killer frost. Savitar is also enters in the central city. he may approach killer frost to fight with flash. previously Cailin was a good women. she always feared of transforming into a meta human with superpowers because she know how difficult it is to live a abnormal life. Barry still trusts Caitlin. but she is willing to defeat Allen. to show her powers to Barry he Freezes a Glass of water with upside down. killer frost have special superpowers to freeze anything in the world.