Friday the thirteenth begins badly for DI Andy Horton when he wakes to find his Harley has been vandalized and his boss, DCI Lorraine Bliss, has returned early from her secondment to HQ. Then, convicted murderer, Luke Felton, released on licence, is reported missing and a decomposed corpse is washed up in Portsmouth harbour. But before Horton can get a grip on either case, he's called to a house where a woman he'd only met the day before has been brutally murdered. Is missing Luke Felton the prime suspect, or is it his body in the mud of the harbour? Horton is under pressure to get results, but things are about to get much worse for the beleaguered detective -