Triptych by Karin Slaughter

Michael Ormewood is the lead detective in the case of a prostitute's murder. He is none too thrilled when Will Trent of the Georgia Bureau of Investigation's Special Criminal Investigation Team is asked to advise. Will points out to Michael several cases recently that involve a similar m.o. to this one--women with their tongues bitten off. They work together very uneasily and there's even more tension when Will realizes that his sometimes girlfriend/friend from childhood, cop Angie Polaski previously slept with Michael. Alternating with the story of Michael and Will is the tale of ex-con John Shelley. John has been recently released from prison after serving twenty years for killing a friend in high school. John discovers that someone has been using his identity and he wonders why. Who is trying to frame John and send him back to prison and how is his predicament connected to the case that Michael and Will are working on? Triptych is the first book featuring Will Trent. I blogged about the second book, Fractured in August. Triptych is an even better story than Fractured.