Moon Over Soho

Moon Over Soho is by Ben Aaronovitch. The second book in the fantasy Rivers of London series. Peter Grant, member of London's Magical Crime Unit, discovers that jazz musicians in Soho are being murdered by a mysterious creature. He and his mentor, Detective Chief Inspector Thomas Nightingale, must hunt down the killer before it can kill again. But everything in Soho is not as it seems, and there is more going on than Peter originally suspects. Fans of the series will love this installment. 

Ratings: 11th grade - 8 out of 10 - AC (mature thematic content) - V (violence).