Wilhelm Vorwerg

Police try to track down a hooded serial killer who murders his victims with a combination of acid and poison gas.

A hooded serial killer finds a novel way to murder his victims--he lashes them to death with a whip. The police try to track him down before any more...

The sister of a famous, but as yet uncaught, criminal named "The Hexer" is murdered. Inspector Higgins of Scotland Yard believes that "The Hexer"...