In The Closers Harry Bosch returns to the police force's new department - Open/Unsolved, aka Cold Cases. His first day on the job has a cold lead - DNA typing on a 20+ year old case. Harry partners with Kiz, his previous partner on the force. Together they find the clues that will eventually solve the case. More interesting is the political spin that it received during its original investigation and where those politicians are today. As always a great novel by Michael Connelly.