This is the 1st story that I have read from this author and he knocked it out of the ballpark. The story begins with two detectives, Ortega who is looking to retire and Drew his partner who Ortega is training. On this call they are called to a killing that occurs just before Christmas. They arrive at the scene and and Drew meets Lucy.
After they have left the scene and start their investigation, there are very little clues. The only source that they have will be through interviews with the decedents friends. After going through several interviews, Ortega believes that the killer is one person and Drew thinks it is someone else. Before they are able to close the case out, they are assigned another one that involves sexual assault. This case too is one with little evidence available. Again the case will be solved based on interviews conducted. While this case is being worked on, they haven't forgotten about the previous one and work it on the slack time.
Through good police work and having another crew take fingerprints at the second murder, they are able to close it out. On the 1st case they ultimately eliminate one of their suspects leaving just one. This individual has also been a person of interest in another case and that one has just been reopened. The individual has fled the state where it happened and disappeared. Through interactions with the detectives on the reopened case, Drew discovers that their suspect has been captured for another killing. After the charge was reduced, this individual served his time and then was released on probation. Drew was able to get an arrest warrant for this individual, but he vanished.
To find out how these cases wound up being solved, what the title "Omerta" referred to and exactly how Lucy plays in the story, then you must read this book. You won't be disappointed.