This is a different kind of thriller that starts out fast, slows greatly in the middle, then picks up to a huge end. Marty is a person who seems to like to hang out on the outside of Rachel Rheinhart's house and look in the window. One night while doing this he witnesses Rachel's husband striking her and then tearing at her clothes. This causes him to break into the house, struggle with the husband and apparently kill him with a gun, then drag out his body and dispose of it and the gun.
What enfolds is that Marty apparently was involved with Rachel and was coming to her defense. He has no idea what she will tell the police and for a few weeks they think that the husband was kidnapped and then realize that the husband was probably murdered (since there is no ransom demand and they had found a lot of the husband's blood at the crime scene).
During this time, Marty sets up an alibi that puts him at work during the murder. Eventually the police suspect Marty of the murder and arrest him when he appears to have confessed to it. What follows if Marty's trial while a lot of apparent shady things seem to be happening with Marty and a special investigator he has hired.
The book is full of twists and turns throughout and you are never quite sure what happened until the very last page and even then there are some serious open questions. I liked the book a lot and would have given it five stars had not some of the explanations given not seemed so unbelievable.