season 4 of the flash started on october 10, 2017.
season 4 of the flash started on october 10, 2017.
when did season 4 of the flash start?
october 10, 2017
Na
Na
though he was believed to have died of als, thomas is found in an arctic lab by barry, caitlin, and cisco after ralph discover that snow's death certificate was faked. they later learn that in his attempt to cure his als, he became a cryogenic metahuman with an evil personality like caitlin. when most of team flash start to freeze, caitlin proves to be immune just before killer frost reemerges. father and daughter engage in an ice battle. after thomas's personality briefly surfaces, icicle knocks killer frost back and gets away.
list of the flash characters