Madge Clayton, a society girl, mysteriously disappears. The police suspect a master criminal is behind the girl's abduction, but her brother, Bob, and fiancé, Bert Moore, help with the search. They unearth a scheme to kidnap another girl, Natalie Van Cleef, and the evidence takes Bob and Bert to an estate on Long Island.
Edna Murphy
as Natalie Van Cleef
Jack Mulhall
as Robert 'Bob' Clayton
Constance Bennett
as Madge Clayton, his sister
Bradley Barker
as Bert Moore
Frank Lackteen
as Dr. Vining
Frances Landau
as Mrs. Fawcette
Harry Semels
as Ivan Invanovitch
Tom Goodwin
as Police Inspector Cabot
Paul Porter
as Paul Mannering, The Emperor
