‘Mr. Creasey realises that it is the principal business of thrillers to thrill.’ Church Times

On a top secret island, the Germans are perfecting a paralysing gas. This gas has the ability to disable an entire infantry troop, a crew of a ship, or the pilots of an aircraft.

With the looming threat of this noxious gas, it’s up to Department Z to find this mysterious island, where the gas is being manufactured, and steal the formula to prevent the Germans from using it as their ultimate weapon.

Island of Peril is the 15th book in the Department Z series, and was originally published in 1940.