Haunted by a past crime and a past lover, a psychoanalyst tries to protect his daughter from his mistakes - but at what cost?

“This dazzling gothic-tinged thriller takes us deep into a labyrinth of secrets, lies, and deceptions.” (Dan Chaon, New York Times best-selling author of Ill Will)

Daniel Abend is a single parent in New York City, with a successful therapy practice and a comfortable life: an apartment on the Upper West Side, a teenage daughter, a peaceful daily routine. When one of his patients commits suicide, it is a tragedy, but one easily explained: The young woman suffered from depression and drug addiction.

But soon after, Daniel receives an ominous note that makes him question the circumstances surrounding his patient’s death. He is provided with a provocative series of clues - a mysterious key, a cryptic poem, a photograph with a chilling message. A few days later, his daughter abruptly disappears.

Daniel is swept into an increasingly desperate search for his daughter, and for the truth - a search that stretches back decades, to when he was a young man living in Paris, falling in love with a woman who would ultimately upend his life. As he is tormented by a steady flow of anonymous letters, Daniel recognizes that he must confront the secrets of his past: There is a debt to be paid, an account to be settled.