LOOK: New "Supergirl" Photos Show Off Martian Manhunter & Dean Cain

A new trio of images from "Supergirl's" upcoming "Manhunter" episode find J'onn J'onzz coming face to face with a snake -- and also Dean Cain's Jeremiah Danvers. The episode, which is set to air on Monday, March 21, will see Martian Manhunter (David Harewood) reveal what he knows about Supergirl's father, played by Cain, following a season of mystery and build up. The images, most likely from one of the episode's flashbacks, also show J'onzz in his natural martian state

J'onn J'onzz reveals the details of meeting Kara and Alex's father, Dr. Jeremiah Danvers (Dean Cain), and assuming Hank Henshaw's identity. Also, Kara debates trusting someone new with her secret identity and Siobhan (Italia Ricci) plots against Kara, on SUPERGIRL, Monday, March 21 (8:00-9:00 PM, ET/PT) on the CBS Television Network.

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

Recurring cast appearing in the episode are Jenna Dewan-Tatum (Lucy Lane), Dean Cain (Dr. Jeremiah Danvers), Italia Ricci (Siobhan Smythe), Briana Venskus (Agent Vasquez), Jay Jackson (News Anchor), Malina Weissman (Young Kara), and Jordan Mazarati (Young Alex). Eddie McClintock guest stars as Col. James Harper

"Supergirl" airs on Mondays at 8 PM ET on CBS.

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