Don Sharp Director Robert Powell Rupert "Wolf" Wolfsen Actor Timothy Bottoms Maj. Elbert Stevens Actor Lisa Blount Leslie Peterson Actor Richard Johnson Ben Gannon Actor Anne Heywood Frieda Shelley Actor A.C. Weary Lt. George Barwell Actor Liam Sullivan Lemurian elder Actor Jackson Bostwick Hunter Prime Actor Richard Beauchamp Santos Arias Actor Christy Marx Screenwriter Robert Vincent O'Neill Screenwriter Sandy Howard Producer Robert D. Bailey Producer Don Levin Executive Producer Mel Pearl Executive Producer Virgil L. Harper Cinematographer John Bowey Film Editing Denny Jaeger Original Music Michel Rubini Original Music Stephen Marsh Art Director Jim Garrard Casting