Cassel comes from a family of curse workers, a minority of the world's population who each have a different ability, such as influencing someone's emotions, their luck, or even their memory. There is even talk of people who can transform objects. Cassel was born without a power, but he comes from a family of con artists with connections to the mob, so being bad enough to kill his own best friend doesn't seem like too much of a stretch, even if he loved her.
When Cassel wakes in the middle of the night to find himself standing on the edge of his dorm roof, his world slowly begins to unravel. He realizes that he can't trust people he thought he could, that some friends and family aren't what they seem, and that there is a very big secret his family has been hiding for a very long time.
I have been a fan of Holly Black's teen fiction for years. She's not for everyone, because her writing tends to be very dark and definitely does not talk down to teens. Bearing that in mind, The White Cat does NOT disappoint. I was hooked from the first page and didn't stop reading until I was at least a third of the way through. It is very easy to feel sympathy for Cassel and every character is interesting and necessary to the story. The world that Holly Black has built is slowly revealed, piece by piece, which makes the mystery of what happened to Lily and what is going on with Cassel and his family even more intriguing.
I would recommend this book to older teens as well as fans of Melissa Marr. If you've already read The White Cat, try one of these:
The Poison Eaters
by Holly Black
by Melissa Marr
The Demon's Lexicon
by Sarah Rees Brennan