Seria Curse Workers de Holly Black

Cassel comes from a family of curse workers — people who have the power to change your emotions, your memories, your luck, by the slightest touch of their hands. And since curse work is illegal, they're all mobsters, or con artists. Except for Cassel. He hasn't got the magic touch, so he's an outsider, the straight kid in a crooked family. You just have to ignore one small detail — he killed his best friend, Lila, three years ago.

Ever since, Cassel has carefully built up a façade of normalcy, blending into the crowd. But his façade starts crumbling when he starts sleepwalking, propelled into the night by terrifying dreams about a white cat that wants to tell him something. He's noticing other disturbing things, too, including the strange behavior of his two brothers. They are keeping secrets from him, caught up in a mysterious plot. As Cassel begins to suspect he's part of a huge con game, he also wonders what really happened to Lila. Could she still be alive? To find that out, Cassel will have to out-con the conmen.

Holly Black has created a gripping tale of mobsters and dark magic where a single touch can bring love — or death — and your dreams might be more real than your memories.

After rescuing his brothers from Zacharov's retribution and finding out that Lila, the girl he has loved his whole life, will never, ever be his now that his mother has worked her, Cassel is trying to reestablish some kind of normalcy in his life. That was never going to be easy for someone from a worker family tied to one of the big crime families and a mother whose cons get more reckless by the day. But Cassel is also coming to terms with what it means to be a transformation worker and figuring out how to have friends. 

But normal doesn't last very long--soon Cassel is being courted by both sides of the law and is forced to confront his past. A past he remembers only in scattered fragments and one that could destroy his family and his future. Cassel will have to decide whose side he wants to be on because neutrality is not an option. And then he will have to pull off his biggest con ever to survive.