Mary's Mystery Bookshop is hosting a very special guest: beloved mystery author Addison Hartley. As Hartley gives an intimate reading to the fans gathered in the store, Mary's eyes are drawn to a face in the crowd. Could it be Claire Wilkes, her best friend from childhood? Before Mary can greet her, the woman disappears and Mary begins to doubt herself. When Mary reads Hartley's new novel, she finds eerie parallels to her own history. And then rumors surface linking Claire and Mary's late husband, John.