Phantom by Jo Nesbo
After the horrors of a case that nearly cost him his life, Harry Hole left Oslo and the police force far behind him. Now he’s back, but the case he’s come to investigate is already closed, and the suspect already behind bars.
Denied permission to reopen the investigation, Harry strikes out on his own, discovering a trail of violence and mysterious disappearances apparently unnoticed by the police. At every turn, Harry is faced with a wall of silence.
But Harry is not the only one interested in the case. From the moment he steps off the plane, someone is watching his every move. Someone wants him silenced…