Monte Markham

Character: Prof. Mark Lowell

Barbara Anderson

Character: Susan Schaeffer

Telly Savalas

Character: Lt. Phil Keegan

Tim O'Connor

Character: Bert Hayes

Joseph Sirola

Character: George Simpson

Lonny Chapman

Character: Martin Binzech

Jim Antonio

Character: Sgt. Ted Korel

Richard Erdman

Character: Ellis

Valentin de Vargas

Character: Steve Curtis

Elizabeth Moore

Character: Mrs. Metcalfe

Robert DoQui

Character: Andrews