The Vandergilt Diamond Mystery - Cast

Name	Known for
Betty Astell Mary (as Elizabeth Astell) Mary (as Elizabeth Astell) See fewer	Strictly Illegal (1935)
Bruce Seton Hardcastle Hardcastle See fewer	Gorgo (1961)
Hilary Pritchard Briggs Briggs See fewer	Alice in Wonderland (1946)
Charles Paton Mr. Throstle Mr. Throstle See fewer	Blackmail (1929)
Ethel Royale Mrs. Throstle Mrs. Throstle See fewer	Father and Son (1936)
Graham Soutten The Boss (as Ben Graham Soutten) The Boss (as Ben Graham Soutten) See fewer	The Sign of Four: Sherlock Holmes' Greatest Case (1932)
Billy Holland Carponi (as William Holland) Carponi (as William Holland) See fewer	Gay Old Dog (1935)
Henry B. Longhurst Inspector Greig Inspector Greig See fewer	The Captain's Paradise (1953)
Bryan Herbert Actor (uncredited) Actor (uncredited) See fewer	The Alcoa Hour (1955)
John Miller Actor (uncredited) Actor (uncredited) See fewer	Young and Innocent (1937)