The victim's worst enemy was himself. When an elderly man is found dead in his home, the angle of his neck says he fell down the stairs. The stab wound on his body tells a different story. In the weeks before his murder, Alistair Moreton changed. A recluse by nature, neighbours swear someone was living with him, someone he didn't want them to see. Moreton spent a lifetime making enemies and now DS George Cross needs to uncover which one finally struck back. Because in all of Alistair's years, there was something important he never learned. If you go through life hurting people, don't be surprised when they teach you a lesson. Perfect for fans of MW Craven, Ann Cleeves and Joy Ellis, The Teacher is part of the million-copy-bestselling George Cross Mystery series, which can be read in any order, by the 2025 Crime Writers' Association Dagger in the Library Award longlistee.