This is a psychological thriller set in a mental hospital, and is told by a schizophrenic. Francis Xavier Petrel is a former patient of Western State Hospital and is writing down his memories of his time at the hospital after meeting another former patient and agreeing that certain incidents simply had to be revealed. Running true to his status as someone who is mentally ill, he chooses to write his story on the walls of his apartment.
The story is essentially a murder investigation, but it's an investigation with a difference because it is run completely within the mental hospital raising all sorts of pitfalls and barriers. Trying to locate a suspected serial killer by pinpointing unusual behaviour is virtually impossible because everyone there is responsible for abnormal traits of one form or another. When the resident's routines are disrupted there is generally widespread emotional upheaval which puts everyone in the hospital under immense pressure. Interviewing witnesses is almost irrelevant with most of the patients either catatonic or delusional so that very little valuable information can be obtained.
Together the three main characters conduct their investigation as best they can, hampered by the fact that one of them is known to be suffering schizophrenia and another has been arrested for murder and is being assessed on his sanity. This is not your ordinary run-of-the-mill murder investigation. While the investigation continues with very little progress being made, the unthinkable realisation hits home...the killer, who is in all likelihood a serial killer, is still living in the hospital locked up with everyone else just biding his time and waiting to kill again. Yikes!
Thanks to constant flashes forward to the present where we see the effects that reliving his memories has on Francis, we are given hints as to what is going to happen later on in the story. Rather than spoiling the story for me, it tended to create a tremendous feeling of anticipation, with just enough information being given out to create uncertainty about the direction the story will head next. The flashes to the present also revealed that Francis is becoming more unstable as he neglects his medication due to his single-minded determination to tell his story. In the end, he is in a race against his own mind to get his story out before madness completely engulfs him.
John Katzenbach has once again produced an outstanding psychological thriller combining a terrifying murder investigation conducted under tight restrictions with the unusual but very interesting surroundings of a mental hospital. I was pulled completely into the story and found myself frantically choosing suspects and then discarding them in an effort to work out who the killer was.