Ally Sheedy Carter Jones Actor Bonnie Bedelia Nancy McDonald Actor Michelle Forbes F.B.I. Agent Jamie Pratt Actor Erich Anderson Evan Robert Cooper Actor Andrea Roth Dr. Dana Elwin Guest Star Tom Butler Dr. Werner Actor Graham Greene Chief Weapons Officer Actor Sarah Strange Rachel Connors Guest Star Jan D'Arcy Senator Sara Watson Guest Star William B. Davis John Wymer Guest Star Jonathan Scarfe Charlie Walters Guest Star Teryl Rothery Janet Brevson Guest Star Xander Berkeley Terry McCammon Guest Star Jane MacDougall Marianne Dobson Guest Star Lisa Melilli Debi Richardson Guest Star Paul Anthony McLean Dr. Phillips Guest Star Corrie Clark Young Theresa Givens Guest Star Robert Lewis Commander Guy LeClerc Guest Star Kevin Conway Control Voice Guest Voice Sam Vincent Jerome Horowitz Guest Star Pen Densham Executive Producer Richard B. Lewis Executive Producer John Watson Executive Producer Chris Dickie Writer James Crocker Writer Brad Wright Writer Jonathan Glassner Writer, Director Alan Brennert Writer Steven Barnes Writer Chris Brancato Writer John Whelpley Writer Scott Shepherd Writer Larry Niven Writer Jonathan Walker Writer Mario Azzopardi Director Joseph L. Scanlan Director Brad Turner Director Ken Girotti Director Michael Keusch Director