Cast
Burgess Meredith
Felix Milne
Dulcie Gray
Patricia Milne
Michael Shepley
Peter Edge
Christine Norden
Barbara 'Babs' Edge
Kieron Moore
Adam Lucian
Barbara White
Molly Sinclair Lucian
Walter Fitzgerald
Dr. Norris Pile
Edgar Norfolk
Sir George Freethorne
John Laurie
Dr. James Garsten
Martin Miller
Dr. Hans Tautz
Clive Morton
Robert Paston
Joss Ambler
Julian Briant
Jack Raine
Inspector Pierce
Laurence Hanray
Dr. Lefage
Helen Haye
Lady Maresfield
John Stuart
Dr. John Hayling
Ronald Simpson
Mr. Grandison
Gwynne Whitby
Miss English
Malcolm Dalmayne
Charlie Oakes
Michael Hordern
Co-Counsel at Inquest
Jack Howarth
Party Guest
Geoffrey Sumner
Parkinson
Crew
Directing
Anthony Kimmins
Director
Editing
Richard Best
Editor
Visual Effects
Cliff Richardson
Special Effects Supervisor