Sherlock Holmes
Amelia Rojas
Mr. Halligan
Lady Violet Somerset
Mrs. Halligan
Clara Anderson
Paul Anderson
Charlie Holroyd
Cassie
Lucia Rojas
Inspector Bullivant
Marjorie Anderson
Shaw McPherson
Dan Moriarty aka Michael Wylie
Ballroom Guest (uncredited)
Chief Inspector Whitlock
Constable Evans
Magott
Weams
Detective Swann
Bertram Birtwistle
Roberto Ricci
Martha Ricci
Innkeeper
