The Night Fire, by Michael Connelly (Orion, 2019)

Ballard and Bosch investigate a cold case murder file brought to Harry by the widow of his mentor. The 22nd in the sequence (also involving lawyer protagonist Mickey Haller) is a confident, detailed, and crisp yarn packed with the author’s customarily authoritative procedural detail and empathy for his leads. Recommended. 

My own books are here, if that’s your thing. Newest is noir thriller East of England.