In a world divided between good and evil, what happens when you're both?

Nathan Byrn is the illegitimate son of the world's most dangerous witch.

Feared by the Council of Fairborn witches who believe he is destined to follow the same destructive path as his father, Nathan must find a way to unlock his full powers before his seventeenth birthday, or face madness and death.

His one hope lies with the sinister Blood witch Mercury. But Mercury's help always comes at a price - one Nathan may not be able to pay . . .

Previously published as Half Bad.

'An action-packed X-rated Harry Potter' - Telegraph

Sally Green lives in Cheshire, England. She has had various jobs from her first paper-round to a career as an accountant, but in 2010 she started writing a novel and that changed her life. She still runs most days despite several attempts to give it up. Follow her on Twitter @Sa11eGreen.