Killer Frost proves she's ice cold in this chilling 'Flash' sneak peek

After struggling to control her unwanted metahuman abilities for the past few episodes, Caitlin Snow (Danielle Panabaker) will take center stage in the Nov. 22 installment of The Flash, ominously titled "Killer Frost." 
A heroic deed has dire consequences for our favorite scientist in Tuesday's episode, when — as Caitlin's mother predicted — a powerful display of her abilities unleashes her inner villain. 
Mashable has an exclusive sneak peek at Killer Frost in action abov