The Perfect Son is a gripping psychological thriller by #1 New York Times bestselling author Freida McFadden. Published by Sourcebooks, this 373-page novel follows Erika Cass, who has built a perfect family and a perfect life in a quiet suburban neighborhood. Everything changes when two detectives arrive at her front door to inform her that a high school girl has vanished, and her teenage son Liam was the last person to see the girl alive.

As the evidence mounts against Liam, Erika is forced to confront something dark she has always sensed in her seemingly perfect older child. The story explores the lengths a mother will go to protect her son, weaving themes of family loyalty, buried secrets, and moral ambiguity into a suspenseful narrative with unexpected twists. First published in October 2019, the novel has garnered over 500,000 ratings and has become one of McFadden's most widely read works.