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