SWEET SORROW - with Detective John Bowers

The fifth book in the Senior Detective John Bowers series lands us at the scene of a tragic carjacking to find a young mother shot dead in her parked car. Homicide cops in Central Precinct catch a case which looks like a carjacking. There's a young mother slumped behind the wheel with a bloody hole in her head. But without a weapon, no brass, no prints, it's not going to be an easy collar.
But when the full forensics team shows up and examines the evidence, it turns out to be something it isn't supposed to be. This is a premeditated murder with the killer trying to throw the cops off the track. The homicide team has to follow the muddy tracks their killer left behind. But there isn't much to follow. Very little forensic evidence to work with means they have to hit the streets and look for answers the old fashioned way.
Their first job is to convince the Central Precinct Commander that the murder is not a carjacking and is not even what it seems to be as a random crime. This is a capital murder for profit, and Bowers and Raye can make their case through strong, circumstantial arguments. But the Commander and the DA demand they come up with strong forensics to convince a jury to convict.
In the middle of a frustrating investigation, a carjacking occurs across town with a dead attorney of note the victim. Now the detectives are called off their main case and tasked with solving the carjacking case. It takes a while before they can persuade their betters that the real carjacking has nothing to do with their main case.
When they finally are able to cuff their prime suspect and put their case to rest, a blast from left field zaps them with harsh reality -- no case is ever closed with all the dots and crosses novels seal the deal with. Readers and cops alike never saw this one coming. It's a reminder that even good cops wear blinders once in a while.