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