It’s the 1950s in the north of England. The Gilmores seem like any hardworking family just striving to get on after the war years. But Calvin, the cousin who joins them after the violent death of his own family, is hiding his true character under a veneer of likeable charm and startling physical beauty. And no one is ever suspicious when, one by one, those standing in Calvin’s way, meet an untimely death.

The cousins, David and Calvin, plus the lovely Elizabeth, move to the Costa Blanca in Spain and become successful and rich. But Calvin cannot control his natural tendencies to manipulate life by ridding the world of those who simply annoy him. Oblivious to the weird goings-on, David never once loses his idol-worship of his older cousin and in no way suspects him of being responsible for the evil erupting around them - until it is too late…