The Surrogate Mother is a #1 New York Times bestselling psychological thriller by Freida McFadden, published in paperback by Sourcebooks/Poisoned Pen Press on August 19, 2025. Originally self-published in 2018, this re-released edition features a new cover and debuted at #1 on multiple international bestseller lists, including the New York Times, the UK's Sunday Times, and Canada's Globe and Mail. Barnes & Noble named it one of the best paperbacks of August 2025.

The story follows Abby, a woman who desperately wants to become a mother after years of failed infertility treatments and adoptions that have fallen through. When her personal assistant Monica offers to serve as a surrogate, it seems as though all of Abby's dreams are finally within reach — until strange things begin to happen and the truth about Monica surfaces. Monica is not who she says she is, and the woman now carrying Abby's child has an unspeakable secret she will stop at nothing to protect.

Freida McFadden is a physician based in Boston and an internationally bestselling author whose novels have been translated into more than 40 languages. She is the winner of the International Thriller Writers Award for Best Paperback Original and the Goodreads Choice Award for Best Thriller. A Sony Pictures film adaptation of The Surrogate Mother is currently in development. This paperback edition is 320 pages (5 x 8 inches), ISBN 9781464227301.