All her life, Olivia Prior has wondered who she truly is and where she belongs. Her only clue is her mother's slim, battered journal, full of elusive entries that show her unraveling. Then a letter beckons Olivia home - to Gallant. The one place her mother's journal warns her never to go. There she finds a manor with a sprawling, vibrant garden - and the crumbling ruin of a garden wall with an iron door.
A door she must never open. Because of what is on the other side. What is always trying to get out. Internationally acclaimed and bestselling author V. E. Schwab weaves a dark and original tale about the place where the world meets its shadow - and about the young woman beckoned by both sides.