Scotland Yard must discover why people are being murdered by a monstrous dog at Blackwood Castle.

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.

Ms. Pendleton is the commander-in-chief of a women's training camp for western spies, recently established in Turkey. CIA agent Leyton receives a mission, to discover and destroy an enemy group operating in the vicinities of that residence. He will manage, with the help, and sometimes extra zeal, of a team of young women recruits.