John J. 'Jack' Robinson

Pat Boone

Cynthia Marley

Erica Rogers

Cornwallis Marley

Dennis Price

Natalia Marley

Andrée Melly

Reginald Marley

Valentine Dyall

Percival Marley

Jack Bligh

Muldoon Marley

Archie Duncan

Grandpa Marley

Erik Chitty

Doctor

Oswald Laurence

Producer

Margia Dean

Director

Terence Fisher

Screenplay

Ray Russell

Executive Producer

Robert L. Lippert

Original Music Composer

Douglas Gamley

Editor

Robert Winter

Art Direction

Harry White

Production Manager

Clifford Parkes

Conductor

Philip Martell

Sound Recordist

George Stephenson

Makeup Artist

Bill Lodge

Hairstylist

Daphne Vollmer

Production Accountant

Maureen Newman

Wardrobe Supervisor

Jean Fairlie

Camera Operator

Len Harris

Assistant Director

Frank Nesbitt

Continuity

Renée Glynne

Production Secretary

Barbara Allen

Director of Photography

Arthur Lavis

Assistant Editor

Clive Smith