The Demon's Lexicon, 1

Nick's family has been on the run from magicians his whole life. His father is dead, and his insane mother hates him--she starts screaming if he touches her. After Nick's protective older brother is marked with a demon sign that means death, danger is unavoidable. The only way to erase the sign is to kill a magician. As Nick and his brother play a deadly cat and mouse game with the magicians, Nick begins to suspect that everything his brother has told him about their past is a pack of lies. Not knowing whom to trust or where to turn, he walks into a trap--and a startling revelation that changes everything he's ever believed.