Interrogated by the government, J’onn J’onzz reveals the fate of Hank Henshaw and Jeremiah Danvers — prompting Kara to reveal her secret to someone in order to save her loved ones. Meanwhile, Siobhan tries to get Kara fired.

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

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J'ONN J'ONZZ REVEALS THE DETAILS OF MEETING KARA AND ALEX'S FATHER, DR. JEREMIAH DANVERS, AND ASSUMING HANK HENSHAW'S IDENTITY, ON "SUPERGIRL," MONDAY, MARCH 21

"Manhunter" - 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.

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)
Dean Cain (Dr. Jeremiah Danvers)
Italia Ricci (Siobhan Smythe)
Briana Venskus (Agent Vasquez)
Jay Jackson (News Anchor)
Malina Weissman (Young Kara)
Jordan Mazarati (Young Alex)

GUEST CAST:

Eddie McClintock (Col. James Harper)
Daniel Josev (DEO Agent #2)
Vincent Giovanni (Police Officer)
Maisie Klompus (Cat's Assistant)
Angela Martinez (Field News Reporter)
Zayne Emory (Rick Malverne)
Mackenzie Brooke Smith (Female Student #1)
Jaiden Jiron (Female Student #2)