Speed kills, as Peter Graves attempts to bust up a black market amphetamine racket in this action-packed thriller. When bootleg bennies threaten to destroy the long-distance trucking industry, undercover FDA agent Tom Kayler (Graves) is ordered to investigate. Posing as a student driver, he takes a room at a boarding house that caters to truckers, run by the widow of a pill-popping hauler (Mala Powers). So when his hopped-up partner (Chuck Connors) introduces him to a hash-slinging dealer (Merry Anders), Kayler embarks on a trail that leads to murder.