Supergirl/The Quest for Peace

The Quest for Peace
Season 4, Episode 22
Airdate	May 19, 2019
Production Number	T13.21222
Teleplay by	Rob Wright & Derek Simon
Story by	Robert Rovner & Jessica Queller
Directed by	Jesse Warn
Stream
← 4x21 Red Dawn	5x01 → Event Horizon
Supergirl — Season Four

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The Quest for Peace is the twenty-second episode of the fourth season of Supergirl, and the eighty-seventh episode overall.

Starring: Melissa Benoist (Kara Zor-El / Kara Danvers / Supergirl, Red Daughter), Mehcad Brooks (James Olsen), Chyler Leigh (Alexandra "Alex" Danvers), Katie McGrath (Lena Luthor), Jesse Rath (Querl Dox / Braniac 5), Sam Witwer (Ben Lockwood / Agent Liberty), Nicole Maines (Nia Nal / Dreamer), April Parker Jones (Colonel Lauren Haley)

and David Harewood (J'onn J'onzz / Martian Manhunter)

Special Guest Star: Jon Cryer (Lex Luthor)

and Helen Slater (Eliza Danvers)

Guest Starring: Bruce Boxleitner (President Baker), Brenda Strong (Lillian Luthor), Azie Tesfai (Kelly Olsen), Andrea Brooks (Eve Teschmacher), Graham Verchere (George Lockwood), LaMonica Garrett (Mar Novu / The Monitor), Francoise Robertson (Sarah Walker), Patti Allan (Leviathan Woman)

Co-Starring: Phil LaMarr (Malefic J'onzz), Fraser Aitcheson (Lead Guard), Steel Bey (Charlie), George Boutros (Alien), Keith Dallas (Al), Darcy Hinds (Control Room Guard), Raphael Kepinski (Kaznian General), Kapila Rego (Lena's Assistant)