After years spent in Wonderland, Alice Reeve learned the impossible was quite possible after all. She thought she left such fantastical realities behind when she finally returned to England. Now Alice has become a member of the clandestine Collectors' Society, and the impossible has found her again in the form of an elusive villain set on erasing entire worlds. As she and the rest of the Society race to bring this mysterious murderer to justice, the fight becomes painfully personal. Lives are being lost. Loved ones are shattered or irrevocably altered. Each step closer Alice gets to the shadowy man she hunts, the more secrets she unravels, only to reveal chilling truths. If she wants to win this war and save millions of lives, Alice must once more embrace the impossible and make the unimaginable, imaginable. Sometimes, the rabbit hole leads to terrifying places.