For cinema projectionist Sid Elbridge, it seems that things can't get much worse. First, circumstantial evidence has made him the prime suspect in the police investigation of a robbery at the cinema where he works. Secondly, his fiancée Vera has been horribly killed in the same theatre, victim of a falling light fixture. Then he discovers strange, intricate patterns traced in the dust on the wooden frame of a still-case. There's something very wrong about this "accident," he now realizes, and begins investigating what actually happened.

Slowly he realizes that a ruthless murderer is lurking in the shadows, and only Sid can uncover the Pattern of Murder!

Another great mystery story by a British master of intricate plot twists.