Alex Cord

as Joe Christopher

Shirley Eaton

as Phoebe Stewart

Laurence Naismith

as Burr

Oscar Beregi Jr.

as Philippe Soriel (Scorpio)

Lester Matthews

as Mr. Harris

Antoinette Bower

as Terry

Arthur Malet

as Hinton

Barry Ford

as Bratter

Émile Genest

as Garin

Vincent Beck

as Paul Fretoni

Ilka Windish

as Miss Gunther

Laurie Main

as Tyson

Andre Philippe

as Gian

Harry Raybould

as Lodel

Danielle De Metz

as Marie

Milton Parsons

as Mr. Atkinson

Ivor Barry

as Rt. Hon. John Murney