A serial killer who calls himself "The Laughing Corpse" dresses up in a skeleton costume and kills his victims with a poison-filled scorpion-shaped ring.
Inspektor Higgins
Peggy Ward
Sir Arthur
Sir Cecil
Der Fremde
Adela
Ramiro
Dr. Brand
Mr. Merryl
Sabrina
Mrs. Potter
Mr. Potter
Miss Finley
Professor Bound
Bannister
Library Clerk
Casper
Secretary
Captain
