"Four lost friends, four tasks to complete, one big mystery left. Police detective Carter McLean is the only survivor of a plane crash that kills his four best friends. He returns to work but he is left full of guilt and terrible flashbacks. So for each of his four friends he decides to complete something that they left unfinished. Eighteen months before the crash Suzanne Holland disappeared, leaving a room with traces of blood, but no other leads. Suzanne was the wife of one of Carter' four best friends. Adding to the pressure, the boss's niece has a stalker. Due to the sensitivity of the Holland case, Cater is put on this investigation. DS Marie Evans is the only person Carter can confide in. But even she begins to doubt whether he can really cope and whether he is actually losing his mind. "--