Director
Milton Rosmer
DIRECTOR
Writer
Charles Bennett
WRITER
Billie Bristow
Arthur Conan Doyle
Stars (in credits order)
Seymour Hicks
Professor Heggie
Nancy O'Neil
Angela Heggie
Gibson Gowland
Angus
Frederick Peisley
Jimmy Andrews
Eric Hales
Jack Campbell
Ben Field
Piermaster
Hubert Harben
Prof. Blenkinsop Fothergill
Rosamund John
Maggie Fraser
Robb Wilton
Reporter
Fewlass Llewellyn
Scientist at Meeting
Stafford Hilliard
Macdonald (uncredited)
John Jamieson
McDougall (uncredited)
Cyril McLaglen
Mate (uncredited)
John Miller
Reporter in Pub (uncredited)
Clive Morton
Reporter (uncredited)
John Rae
Villager in Pub (uncredited)
Elma Reid
Typist (uncredited)
D.J. Williams
Judge (uncredited)
