Matt Helm is called out of retirement to stop the evil Big O organization who plan to explode an atomic bomb over Alamagordo, NM, and start WW III.

Dean Martin
as Matt Helm

Stella Stevens
as Gail Hendricks

Daliah Lavi
as Tina

Victor Buono
as Tung-Tze

Arthur O'Connell
as Joe Wigman

Robert Webber
as Sam Gunther

James Gregory
as MacDonald

Nancy Kovack
as Barbara

Cyd Charisse
as Sarita

David Bond
as Dr. Naldi