Générique complet
Cerveaux de rechange
Boris Karloff
Dr. Laurence
Anna Lee
Dr. Clare Wyatt
John Loder
Dick Haslewood
Frank Cellier
Lord Haslewood
Donald Calthrop
Clayton
Cecil Parker
Dr. Gratton
Lyn Harding
Prof. Holloway
Clive Morton
Journalist
DW
D.J. Williams
Landlord
VH
Vincent Holman
Mr. Gray
CR
Charles Rolfe
Police Constable
BP
Bryan Powley
