Robert Rockwell

as Bill Jones

Hanna Axmann-Rezzori

as Nina Petrovka (as Hanne Axman)

Betty Lou Gerson

as Greta Bloch, alias Yvonne Kraus

Shepard Menken

as Henry Solomon

Lester Luther

as Earl Partridge

William Lally

as Jack Tyler (as William J. Lally)

Lloyd G. Davies

as Inspector O'Toole