Summary: As Wells (Tom Cavanagh) once again gets the upper hand on the S.T.A.R. Labs team, Barry (Grant Gustin) is going to realize he needs to make a big move and reaches out to an old foe, Captain Cold (guest star Wentworth Miller), for help. Joe (Jesse L. Martin) and Caitlin (Danielle Panabaker) will warn Barry that Cold can’t be trusted. True to form, Cold will have his own agenda that involves the meta-humans trapped in the containment cells. As things seem to be going from bad to worse, The Flash will get reinforcements – Arrow (guest star Stephen Amell) and Firestorm (guest star Robbie Amell).
