Anne Heywood

Anna Holt

Peter van Eyck

Dr. Peter Corrie

Cecil Parker

Stevenson

Bernard Lee

Dr. Frank Shears

Ellen Schwiers

Ella

Siegfried Lowitz

Mr. Walters

Hans Nielsen

Immerman

Jeremy Spenser

Martin Holt

Maxine Audley

Marion Fane

Jack MacGowran

Furber

Miles Malleson

Dr. Miller

George A. Cooper

Thomas Gabler

Dieter Borsche

Dr. Miller

Ann Sears

Stevenson's secretary

Irene Richmond

Mrs. Gabler

Allan Cuthbertson

Da Silva

Bandana Das Gupta

Miss Soong

Alister Williamson

Inspector Pike

Patsy Rowlands

Young Woman at Dance Hall (uncredited)

Bryan Pringle

Dance Hall MC (uncredited)