London After Midnight

Lon Chaney

Professor Edward C. Burke/The Man in the Beaver Hat

Marceline Day

Lucille Balfour

Henry B. Walthall

Sir James Hamlin

Percy Williams

Williams, Balfour's Butler

Conrad Nagel

Arthur Hibbs

Polly Moran

Miss Smithson, the New Maid

Edna Tichenor

Luna, Bat Girl

Claude King

Roger Balfour

Andy MacLennan

Bat Girl's Assistant

Allan Cavan

Real Estate Broker (uncredited)

Jules Cowles

Gallagher (uncredited)