The Academy

Detective Arthur Williams spent two years playing cat and mouse with the illusive thief known as Phantom. A year later he receives a phone call from her in prison, she's not angry that he caught her, he won their game fair and square. She wants to help him solve a string of murders which she beliefs are being committed by someone who received the same education as she did.
A school for thieves known only as The Academy with a strict code of honour that it seems not all the graduates follow. Someone who has the same set of skills that she used to evade the police for years, only they're using them to kill. Time for a new game.