CBS has released the episode 7 description for Supergirl as well as a first look at Charles Halford who is set to play the DC Comics alien nemesis Jemm.
See, all be it a small preview image:
“Human For A Day” episode synopsis reads:
Kara and her friends must rely on their inner strength and courage when an earthquake strikes National City. Also, Alex’s mistrust of Hank reaches a breaking point when the earthquake traps them in the DEO with Jemm (Charles Halford), a powerful alien escapee.
Supergirl “Human For A Day” episode airs on CBS come Monday, December 7th 2015 (8:00-9:00 PM, ET/PT)