Calum Neuman, a private investigator living on Scotland's remote west coast, has his world turned inside out by a new client.

Glenda Muir, a tormented hypnotherapist, needs to find her estranged twin sons and asks Neuman to locate them.

During a midsummer witching ceremony in the woods, a sinister event shatters Neuman's normally placid life ... and he starts to feel out of his depth.

As the frenzied search gathers pace, doubts creep in as to whether the twins actually exist ... and Calum becomes prey as a killer joins his trail.

"YOU WILL BE DRAWN...