as Inspector Brockett
as Sergeant
as Fairbrother
as Charley
as William Strahan
as Peter Thomas
as Sir Arthur Conan Doyle
as Dr. Friendman
as Sir George Crofts
as Det Insp Bead
as Squire
as Harry S. Bloomburger
as Queen's Counsel
as Sinclair
as James Johns
as Narrator
as Superintendent Carson
as Granville Bennett
as Chief Superintendent Strange
as Petroc
as Major Hawkins
as Supt. Cramer
as George Bunn
as Sam McGuire
as Mr. McAllister
as Inspector
as Robert Koch
as Kolmaar
as Catesby / Ely (voice)
as Jonas Bradlaw
as Mr. Spenlow
as Det. Sgt. Evans
as Superintendent Rafferty
