Guest Stars Wynn Everett as Whitney Frost Reggie Austin as Jason Wilkes Lesley Boone as Rose Roberts Lotte Verbeek as Ana Jarvis Kurtwood Smith as Vernon Masters Ken Marino as Joseph Manfredi Matt Braunger as Dr. Aloysius Samberly Tom Choi as Dr. Chung Tina D'Marco as Nonna Manfredi Damian O'Hare as Nick Driscoll Co Starring Rey Valentin as Agent Vega Russell Edge as Agent Blackwell Brian Glanney as Agent Ford Tim Brown as Snub-Nose