As it turns out, the Girl of Steel isn't quite so invulnerable. Titled "Supergirl Lives," a new promo for the back half of "Supergirl" Season 2 shows Kara bathed in the light of a red sun and in obvious pain, while a cry of "You're bleeding!" echoes over the scene.

"If you go looking for trouble, you'll always find it," Mon-El says ominously over footage of Supergirl destroying a truck.

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The promo makes it appear as though she isn't the only one in trouble. In the opening of the teaser, Winn admits that he's scared, and Alex responds that she was too when she first went into the field. Elsewhere, James suits up as Guardian. Roulette (Dichen Lachman) also reappears after her debut and subsequent escape in the Season 2 episode "Survivors." Additionally, Kara is seen walking through the halls of what appears to be an alien ship with Mon-El and a man with a lab coat.

Starring Melissa Benoist as the Girl of Steel, "Supergirl" returns Monday, January 23 at 8 pm ET/PT on The CW. The series also stars David Harewood as Martian Manhunter, Mehcad Brooks as Jimmy Olsen, Chyler Leigh as Alex Danvers and Jeremy Jordan as Winn Schott and features appearances by Calista Flockhart's Cat Grant as well as Tyler Hoechlin's Superman.