Gabriel, Riley and Lillian head to San Francisco when the FBI's Witness Protection database is hacked and someone is blackmailing witnesses to carry out a terrorist attack. The stakes are even higher for Lillian, as her daughter lives in the city.

Cast: Josh Holloway, Marg Helgenberger, Meghan Ory, Lance Reddick, John Billingsley, P.J. Byrne, Monica Herman, John Pollono, Jack Topalian