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. 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...

When brilliant FBI agent Kendra Donovan stumbles back in time and finds herself in a 19th century English castle under threat from a vicious serial killer, she scrambles to solve the case before it takes her life -- 200 years before she was even born.