When an earthquake hits National City, Supergirl and her allies are kept busy while Supergirl's sister Alex Danvers and the less-than-trustworthy Hank Henshaw are trapped in the DEO facility with an alien escapee -- Jemm, the Son of Saturn, as played by Charles Halford ("Constantine").
The episode, titled "Human For a Day," airs on CBS on Monday, December 7.
"Human For a Day" - 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, on SUPERGIRL, Monday, Dec. 7 (8:00-9:00 PM, ET/PT) on the CBS Television Network.
"Supergirl" airs Mondays at 8 pm EST on CBS, starring Melissa Benoist, Calista Flockhart, David Harewood and Chyler Leigh.