It was meant to be a harmless stag night prank. A few hours later four of his best friends are dead, and Michael Harrison has disappeared. Detective Superintend... » 

It was meant to be a harmless stag night prank. A few hours later four of his best friends are dead, and Michael Harrison has disappeared. Detective Superintendent Grace is contacted by Michael's distraught fiancee, Ashley Harper. Grace discovers that the one man who ought to know Michael Harrison's whereabouts is saying nothing. «