A police squad descend swiftly on a house, eager to exploit the rare opportunity of catching a burglar in the act.

Nothing could have prepared them for what they find.

From inside a room on the ground floor, comes the eerie sound of a woman singing, ‘the childmaker . . . the childmaker . . . beware the childmaker’.

Four officers break down the door to enter a darkened room. Their flashlights illuminate the body of a man with a knife in his chest and a bloody mess where his face should be.

Nearby, stands a small, thin woman. In her hand is a kitchen knife . . .

By the time, Detectives Ray Paterson and Johnny Clocks arrive at the scene, there is carnage.

But what is bricked up behind the wall is far, far worse.

A RACE-AGAINST-TIME THRILLER WHICH WILL HAVE YOU TOTALLY ADDICTED.