A break-in and sabotage attempt occurs at a top secret research institute and the culprit is cornered and captured. The problem is that he's been badly injured and claims to have lost his memory entirely. A cat-and-mouse game ensues between investigator Tuxan, the mystery intruder Welles and the people who sent him on the mission.

George Peppard
as Tuxan

Michael Sarrazin
as John David Welles / Peter Bellamy

Christine Belford
as Nicole Devon

Cliff Potts
as Carl Mosely

James Olson
as Senator Stanton

Tim O'Connor
as Frank Gossage

James McEachin
as Bender

Alan Oppenheimer
as General Hackett

Roger Dressler
as Charlie Kitchen

Ty Haller
as Henshaw
CinemaSerf
When "Welles" (Michael Sarazin) is caught after an audacious break in to sabotage a top secret government lab, he claims to have been so traumatised by the whole experience and explosive aftermath that he cannot remember anything about who he is, or why his was there. That deduction falls to "Tuxan"...