Treachery in Death by J.D. Robb
Lieutenant Eve Dallas is about to come up against her most formidable criminal yet: Lieutenant Renee Oberman. Oberman runs a tight ship in the illegals division of the New York Police and Security Department: she's also the daughter of a NYPSD legend. After eighteen years on the force, Oberman is efficient, decorated - and utterly corrupt.
When Eve's partner Peabody overhears a damning conversation between Oberman and one of her flunkies, Peabody. Eve and her husband Roarke are soon on her case. Together, they must find the hard evidence needed to bring Oberman and her dirty cops down - knowing all the while that she will kill anyone who gets in her way.