as Randolph
as Sheriff Towey[Chs. 1-2, 5-6, 11]
as Mark Cambridge, a reporter
as Shark Man
as Pardee Officer
as The Dude
as Holman
as Officer at Police Station (uncredited)
as Steve - Border Inspection Officer
as Cal Saunders
as Bill Grant
as Racetrack Spectator
as Burt Larsen
as M.P. Captain at Barnhardt's
as Rod
as Ralph Carruthers
as Passing Soldier - Veteran (uncredited)
as Jim Tullett
as Football Playing Student
as Coggins
as Miner (uncredited)
as Henchman Earl [Chs. 7-15]
as Henchman Ed
as Dr. Boulting - Mitchell's Assistant
as Robert Shaw
as Henry
as Curt Warren
as Hogan (uncredited)
as Reporter
as 'Rocky' Steuber
as Jim Williams
as Burt Winslow
as Wade Shelton
as Jim Shannon
as Lieutenant Trent
as Jim Garry
as Henchman Mike
as Ed Hooper
as Policeman (uncredited)
as Self (archive footage)
as Scheller
as Jim Hackett
as Hank
as Detective (uncredited)
as Sam Dawson
as Kirk Wheeler - Henchman
as House Peters
as Agent Burke
as Courier
as Deputy Jack Thorpe
as Sheriff Cal
as Plainclothesman
as Police Lt. Jeffers
as Policeman
as Harvey (uncredited)
as Nat Swan
as Jake
as Marshal
as Turner
as Ote Bledsoe
as Frank Parker
