John Cannon gave up his Metropolitan Police career for his partner, LizMakepeace, when he took revenge on those who had hurt her whilst she wasworking undercover. Now the troubled couple must make a new life forthemselves as proprietors of 'The Trap' a Fenland public house. In time, andwith growing acceptance from the locals, they find happiness. They have cometo love this strange land of marshes and dykes - but their past has not donewith them yet. A young girl found unconscious brings the ruthless world ofcrime, assassination and greed back into their new lives and Cannon knowsthat if he fails Liz this time both their lives will be over.