A series of murders that take place in an old, dark mansion are suspected of being committed by an ape. (lost film)
Joe Frisco
as Garrity
Harry Gribbon
as Mulligan
Walter Pidgeon
as Arthur Marsden
Lila Lee
as Alice Denby
Purnell Pratt
as The Stranger
Edwin Maxwell
as Cyrus Stevens
Roscoe Karns
as Simmons
William H. Philbrick
as Jeff
Landers Stevens
as Inspector
