From UK bestselling author Gillian McAllister comes an astonishing, compulsively twisty psychological thriller about a mother who witnesses her teenage son stab a man and then seizes on an unconventional way to try to save him, deemed "perfection, every word, every moment" by Lisa Jewell. Can you stop a murder after it's already happened? Late October. After midnight. You're waiting up for your seventeen-year-old son. He's late. As you watch from the window, he emerges, and you realize he isn't alone: he's walking toward a man, and he's armed.
