Overview
Guests at an old English manor house are stalked by a mysterious killer known only as "The Terror".
Cast
- May McAvoy as Olga Redmayne
- Louise Fazenda as Mrs. Elvery
- Edward Everett Horton as Ferdinand Fane
- Alec B. Francis as Dr. Redmayne
- Matthew Betz as Joe Connors
- Holmes Herbert as Goodman
- Otto Hoffman as Soapy Marks
- Joseph W. Girard as Supt. Hallick
- John Miljan as Alfred Katman
- Frank Austin as Cotton