Reparto y equipo

Roy Boulting

Hayley Mills Susan Harper

Hywel Bennett Martin (Georgie) Durnley

Billie Whitelaw Joan Harper

Frank Finlay Henry Durnley

Barry Foster Gerry Henderson

Phyllis Calvert Enid Durnley

Salmaan Peerzada Shashie Kadir

Christian Roberts Philip Harvey

Gretchen Franklin Clarkie

Timothy West Superintendant Dakin

Thorley Walters Sir John Forrester

Russell Napier Professor Fuller

Timothy Bateson Mr. Groom

Basil Dignam Doctor

Marianne Stone Store Detective

Frank Granat

George W. George

Bernard Herrmann

Harry Waxman

Martin Charles