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, a powerful alien escapee.

Ashton Bingham, Ayo Sorrells, Bryan Lugo, Casey Strand, Charles Halford, David Lim, Laura Benanti, Luke Macfarlane, Peter Facinelli, Stephanie Arcila, Zhuair Haddad