Perfect Scoundrels by Ally Carter
In book four of the Heist Society series, Kat finds herself in an unfamiliar position...stealing for a friend. When Hale's grandmother dies leaving him the family company, Kat learns that something isn't right. Using her crew, Kat tries to uncover the real will...only to discover that control of the company isn't the only thing at stake. Kat is forced to call in her extended family to pull off the biggest con of her career, all while not letting Hale know what and why she is really doing what she is doing. Kat and her crew pull out all the stops in this fast-paced tale of suspense and intrigue.