A.J. Finn

Daniel Mallory (born 1979) is an American author who writes crime fiction under the name A. J. Finn. His 2018 novel The Woman in the Window debuted at number one on the New York Times Best Seller list. The Woman in the Window was adapted into a feature film of the same name, directed by Joe Wright and featuring Amy Adams, Julianne Moore and Gary Oldman.

In 2019 an article in The New Yorker stated that Mallory had frequently lied about his personal life and health. Mallory obliquely acknowledged being deceptive in a statement. Mallory attributed his actions to his struggles with bipolar depressive disorder, which drew criticism from psychiatrists. His second novel, End of Story, was published in February 2024.