Guest Stars Barry Shabaka Henley as Agent Shelly Vreede Michael Ealy as Marshall Vogel Michael Massee as D. Gibbons / Dyson Frost Dominic Rains as Kahmir DeJean James Callis as Gabriel McDow Annabeth Gish as Lita Lee Garlington as Carlene Ravi Kapoor as Malik Ron Orbach as Professor Corey Co Starring Lennon Wynn as Charlie Benford Marquessa Moreland as Dr. Sarah Long Stacy Hall as Ralph Sarah Ripard as Dr. Rupin Verma Catherine McGoohan as Dr. Candace Weaver Sina Amedson as Taliban Gunman Afshin De Jesus Hashemi as Waiter