Devious — Lisa Jackson

When New Orleans detective Reuben Montoya is called to investigate a murder with his partner Rick Bentz, he's shocked to recognize the victim. Camille Renard, an old high-school friend, was found on the altar of St. Marguerite's cathedral, dressed in a yellowed bridal gown and viciously garroted...

Valerie Houston's younger sister, Camille, had a knack for making bad choices. She left Texas after falling for Val's soon-to-be ex-husband, Slade. But as Val digs deeper into Camille's death, she realizes how little she really knows about her sister and their shared past.

Soon more bodies are found brutally slaughtered. No one is beyond suspicion. No one is safe -- least of all Valerie, whose connection to a twisted case is closer, and more dangerous, than she ever could have imagined. For this killer knows all, forgives nothing, and will not rest until Valerie becomes the next to pay for her sins...