The arrival of an anti-alien Senator is followed by an attack by a vicious White Martian, the species J’onn reveals is responsible for the holocaust of his people. Cat is caught off balance when her estranged son Adam shows up, drawn by a letter actually written by Kara.

U.S. air dates are in MM.DD.YY form. U.K. air dates are in DD.MM.YY form.

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KARA MUST HELP HANK BATTLE A MEMBER OF THE ALIEN RACE THAT WIPED OUT HIS PEOPLE, ON "SUPERGIRL," MONDAY, JAN. 25

"Strange Visitor From Another Planet" - 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, Jan. 25 (8:00-9:00 PM, ET/PT) on the CBS Television Network.

REGULAR CAST:

Melissa Benoist (Kara Danvers/Supergirl)
Calista Flockhart (Cat Grant)
Chyler Leigh (Alex Danvers)
Mehcad Brooks (James Olsen)
David Harewood (Hank Henshaw)
Jeremy Jordan (Winslow "Winn" Schott)

RECURRING CAST:

Jenna Dewan-Tatum (Lucy Lane)

GUEST CAST:

Tawny Cypress (Senator Miranda Crane)
Blake Jenner (Adam)
Frank Maharajh (Police Officer)
Rebekeh Salgado (Mom)
Rudy Marquez (Dad)
Juan Martinez (Son)
Jasmine Alveran (Daughter)