Watch Killer Frost Make Her Big Entrance in New 'Flash' Promo

Killer Frost (Danielle Panabaker) loves to be bad in this brand new promo from the upcoming winter premiere of The Flash.

This is the first time we see Caitlyn Snow’s alter ego, aside from a brief glimpse we got at the end of last season.

Meanwhile, we also see Barry (Grant Gustin) and Iris (Candice Patton) getting rather cozy in what looks like the Earth Two versions of themselves.

Oh, and the Reverse-Flash (Matt Letscher) is back too. Watch below!

The Flash returns on Tuesday, January 19 @ 8PM on The CW!