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
Anna Hagan
as Dr. Plover
Hagan Beggs
as Dr. Hager
