Talbott
Professor Westlake
Captain John Vogle
Himself
Art Rooney
Detective Abbott
Captain Martin
Charlie Ryan
Eugene Carter
Det. McCleary
Cmdr. Alex Diehl
Cmdr. Alex Diehl
Sgt. Fred Hardy
Ed Barry
Dr. Caleb Mneck
Det. Grogan
Lt. Ian Conner
Det. Leland
Berger
Frank McCrae
Douglas
Sheriff Collier
Michael Hunsaker
Det. Ray Cameron
Kramer
Col. John MacWilliams
Jack Vance
Dr. Chanless
Stan (segments "Prologue" / "Epilogue") (uncredited)
Dr. Daniel 'Dan' Challis
John Cameron
Sgt. Krebs
Nick Castle
Buck Buchanan
Dr. Moscone
Lt. Bragdon
Cop on Beat
Lt. Tom Sullivan
Kid in Car (uncredited)
Harmon
Clu
