The instant No. 1 ?New York Times?bestseller from the critically acclaimed author of?Lore?and?The Darkest Minds?series. From underground Boston to the cursed ruins of Avalon, join a deadly hunt?fuelled by love, revenge and pure adrenaline to find a legendary ring?and?break the curse. Tamsin Lark is a Hollower. In search of treasure, she breaks into the ancient crypts of dark sorceresses. Now, rumours are swirling about a powerful ring from Arthurian legend, a ring that could free her brother, Cabell from a curse. But they aren't the only ones who covet it As word spreads, greedy Hollowers start circling, and many would kill to have the ring for themselves. Tamsin is forced into an alliancewith her rival Emrys - rich, handsome, charming to a fault, and the last person shetrusts. Together, they dive headfirst into a vipers' nest of dark magic, and expose a deadly secret with the power to awaken ghosts of the past and shatter her last hope of saving her brother . . . Deliciously addictive high-stakes fantasy.