Robert Powell

Rook

Jennie Linden

Sister Mary

George Maharis

Mark Fields

Anthony Newlands

Tony Barton

Derek Fowlds

Dicky

Leigh Lawson

Larry Turner

Windsor Davies

Detective Moore

Norman Mitchell

Security Man

Maggie Rennie

Housekeeper

Joan Haythorne

Mother Superior

Gerry Cowan

T.V. Director

Jill Shakespeare

Operator

Robert D. Cardona

Director

Brian Clemens

Writer

Laurie Johnson

Music

John Sichel

Producer