In this darkly riveting debut novel--a sophisticated psychological mystery that is also an heartbreakingly honest meditation on memory, identity, and aging--an elderly woman descending into dementia embarks on a desperate quest to find the best friend she believes has disappeared, and her search for the truth will go back decades and have shattering consequences.

Maud, an aging grandmother, is slowly losing her memory--and her grip on everyday life. Yet she refuses to forget her best friend Elizabeth, whom she is convinced is missing and in terrible danger.

But no one will...