After several Catholic school pupils are murdered, a teacher who is having an affair with one of his students becomes a suspect. When other gruesome murders start occurring shortly thereafter,…

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

Grisly strangulations in London alert Nayland Smith of Scotland Yard to the possibility that fiendish Fu Manchu may not after all be dead, even though Smith witnessed his execution. A…

Several employees on a nobleman’s estate show up at a former abbey, reputed to be haunted, to search for a hidden treasure. Howver, a mysterious hooded figure begins killing off…

A disfigured killer with glazed-over white eyes is doing the dirty work so that an insurance agent-doctor can get the victims’ insurance money.

Both Scotland Yard and an amateur American sleuth are tracking a master criminal known as The Frog. This moniker refers to the bulging-eyed mask worn by the evildoer, and is…