ENZO MACLEOD TACKLES ONE OF FRANCE'S MOST NOTORIOUS UNSOLVED CASES, IN THE FOURTH OFFERING FROM THE SUNDAY TIMES BESTSELLING MASTER OF CRIME. ILE DE GROIX, FRANCE. A Frozen Island., This tiny isle off the coast of Brittany is the scene of a murder left shrouded in mystery and grief. A Frozen Crime. Adam Killian's study has been left intact since his death - the perfect state for Enzo Macleod's forensic investigation., A Frozen Heart. Killian's daughter-in-law is still hoping; the first suspect is still hiding; and the treacherous island itself still has a revelation for Enzo.