When Matthew's wife Charlotte is kidnapped, his world is thrown into chaos. Who has taken her - and why? There are no demands made for her release, just a threat that if he calls the police, Charlotte will lose the baby she is carrying - and then Matthew will lose her. Matthew is paralysed, haunted by the gloating phonecalls of her captor. As a prison governor, Matthew is convinced that Charlotte's abduction may be related to his job. Unable to talk to anyone in authority, he resorts to the only help he can find - Monk, an ex-prisoner who appears to have gone straight since his release, but has underworld contacts Matthew can only guess at. It's a devil's pact, but time is running out...