Watch: Supergirl “Stranger From Another Planet” Promo

Watch a new promo above for the next episode of Supergirl, “Stranger From Another Planet,” featuring the White Martian.

Episode syopsis:

Kara must help Hank face his painful past when a White Martian, a member of the alien race that wiped out his people, kidnaps Senator Miranda Crane (Tawny Cypress), an anti-alien politician. Also, Cat’s estranged son, Adam (Blake Jenner), arrives in National City, on SUPERGIRL, Monday, January 25th on CBS.