Margaret Lockwood as Annette Allenby

James Mason as Henry Smedhurst

Barbara Mullen as Emilie Smedhurst

Dennis Price as Dr. Robert Selbie

Helen Haye as Florence Manning-Tutthorn

Michael Shepley as Alistair Manning-Tutthorn

Dulcie Gray as Sarah

Ernest Thesiger as Dr. Richard Marsham

Henry B. Longhurst as Inspector Barlowe

Moore Marriott as George

O.B. Clarence as Perkins

Helen Goss as Rosie - the Barmaid

Edie Martin as Cook

Gus McNaughton as P.C. Hargreaves

Muriel George as Nurse

John Turnbull as Sir Roland Jervis

Clarence Wright as Brighouse

Aubrey Mallalieu as Canon Mowbray