Guests at an old English manor house are stalked by a mysterious killer known only as "The Terror".
Olga Redmayne
Mrs. Elvery
Ferdinand Fane
Dr. Redmayne
Joe Connors
Goodman (as Holmes E. Herbert)
Soapy Marks
Supt. Hallick (as Joseph Gerard)
Alfred Katman
Cotton
Narrator of Spoken Credit Titles (uncredited)