Robert Bray

Mike Hammer

Whitney Blake

Nancy Williams

Donald Randolph

Colonel Holloway (as Don Randolph)

Richard Garland

Louis

Fred Essler

Ludwig Teller

Booth Colman

Capt. Pat Chambers (as Booth Coleman)

Pamela Duncan

Velda

Patricia Donahue

Dione

Terence de Marney

Jean (as Terence De Marney)

Peter Mamakos

La Roche