Supergirl: Sneak Peek and Synopsis For Epi 17 (Mar 21)

Here's a preview of episode seventeen of Supergirl "Manhunter", which features Dean Cain as Kara's adoptive-dad.
"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." - CBS