Valentina Cortese

Maria Brentano / Brent / Lena Collins

Serge Reggiani

Louis Balan

Audrey Hepburn

Nora Brentano

Megs Jenkins

Penny

Irene Worth

Miss Jackson

Reginald Tate

Inspector Eliot

Charles Goldner

Anselmo

Simone Silva

Undetermined (Minor Role - Paris Sequence) (uncredited)

Michael Shepley

Manager of the British Pavilion

Athene Seyler

Mrs. Reginald Kellick