Half Bad (The Half Bad Trilogy, Bk. 1)

In modern-day England, witches live alongside humans: White witches, who are good; Black witches, who are evil; and sixteen-year-old Nathan, who is both. Nathan’s father is the world’s most powerful and cruel Black witch, and his mother is dead. He is hunted from all sides. Trapped in a cage, beaten and handcuffed, Nathan must escape before his seventeenth birthday, at which point he will receive three gifts from his father and come into his own as a witch - or else he will die. But how can Nathan find his father when his every action is tracked, when there is no one safe to trust - not even family, not even the girl he loves?