This one was so refreshing after the last few duds. The zoology connection and the red herrings really spiced up an otherwise grim situation. This book features dual timelines that intertwine to form the pattern of a killer. 

Jane and Maura have their friendship tested when they disagree strongly about the connections or lack thereof in several cases. These cases will take Jane to South Africa on the hunt for something far more dangerous than a leopard. She hunts a human. Serial killer. Chameleon.