Cast of Threshold

Meet the talented cast of Threshold. From main characters to supporting roles, discover the actors who bring this show to life.

Starring: Carla Gugino as Dr. Molly Anne Caffrey, Brian Van Holt as Sean Cavennaugh, Brent Spiner as Dr. Nigel Fenway, Rob Benedict as Lucas Pegg, Peter Dinklage as Arthur Ramsey, Charles S. Dutton as J.T. Baylock