The Sinner is the 3rd in Tess Gerritsen’s Rizzoli/Isles series. The action starts with a murder and an attempted murder in a convent of aging nuns. The murder victim is a young novice about to take her final vows, but during the autopsy Maura Isles finds that the novice has recently given birth. Another body turns up, a shooting victim without a face, hands or feet, and with some unusual nodules on the skin. Yet another body, this time in Providence, Rhode Island, shot with the same gun, brings FBI Agent Gabriel Dean into the investigation. Gradually, Rizzoli and Isles piece together the mystery. Rizzoli is somewhat distracted by a development involving Agent Dean, and Isles is similarly distracted by the reappearance of her ex-husband, Victor Banks. Whilst the first two novels were told through Rizzoli or Moore, much of this story is told from the point of view of Maura Isles. Once again, a great plot with a few twists. Gerritsen manages to include aid organisations, leprosy, chemical disasters and miracles in the subject mix. Another excellent read!