Hugh Williams
(Dr. Thurlow)
Chili Bouchier
(Betty Trimmer)
Garry Marsh
(Dr. Mortimer)
Reginald Purdell
(Askew)
James Stephenson
(Inspector Clarke)
Glen Alyn
(Isabel Simmonds)
John Carol
(Merridew)
Lesley Brook
(Mary Cresswell)
Robert Rendel
(Dr. Fletcher)
Aubrey Pollock
(Dr. Cresswell)
Elsa Buchanan
Syd Crossley
Katie Johnson
Ross Landon
Muriel Pope
Ivy Tresmand