The Dark Stairway

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