A government agent investigates the use of illegal amphetamines among long-haul truck drivers.
Peter Graves
Agent / Tom Kaylor
Mala Powers
Valerie 'Val' Owens
Chuck Connors
Mink Reynolds
Merry Anders
Amy 'Miss Diesel of 1958' Phillips
Roy Engel
Wally Morse
Robert B. Williams
'Dunc' Clayton
Harry Lauter
Steve Hummel / Mr. Brown
Pete Kooy
Payson
Robert Christopher
Lennie Owens
Gordon Armitage
Benjie Bancroft
Claire Carleton
Mabel (uncredited)
Bud Cokes
Roy Damron
Club Patron (uncredited)
