Richard Widmark as John Verney

Christopher Lee as Father Michael

Nastassja Kinski as Catherine

Honor Blackman as Anna

Denholm Elliott as Henry Beddows

Michael Goodliffe as George de Grass

Eva Maria Meineke as Eveline de Grass

Anthony Valentine as David

Derek Francis as Bishop

Izabella Telezynska as Margaret

Constantine Gregory as Kollde (as Constantine De Goguel)

Anna Bentinck as Isabel

Irene Prador as German Matron

Brian Wilde as Black Room Attendant

Petra Peters as Sister Helle

William Ridoutt as Airport Porter

Howard Goorney as Critic (Roger)

Frances de la Tour as Salvation Army Major

Zoe Hendry as 1st Girl

Lindy Benson as 2nd Girl

Jo Peters as 3rd Girl

Bobby Sparrow as 4th Girl