"A cool, crafty did-he-do-it thriller [for] readers of Jo Nesbo and Patricia Highsmith." -A. J. Finn, #1 New York Times bestselling author of The Woman in the Window "Ingeniously twisted." -Entertainment Weekly, "Must List" Named a Must-Read Book of the Summer by Elle, Vulture, Entertainment Weekly, and Brit + Co The Talented Mr. Ripley meets The Bad Seed in this breathless, chilling psychological thriller by the #1 bestselling novelist known as "Korea's Stephen King" Who can you trust if you can't trust yourself? Early one morning, twenty-six-year-old Yu-jin wakes up to a strange metallic smell, and a phone call from his brother asking if everything's all right at home - he missed a call from their mother in the middle of the night. Yu-jin soon discovers her murdered body, lying in a pool of blood at the bottom of the stairs of their stylish Seoul duplex. He can't remember much about the night before; having suffered from seizures for most of his life, Yu-jin often has trouble with his memory. All he has to go on is a faint impression of his mother calling his name. But was she calling for help? Or begging for her life? Thus begins Yu-jin's frantic three-day search to uncover what happened that night, and to finally learn the truth about himself and his family. A shocking and addictive psychological thriller, The Good Son explores the mysteries of mind and memory, and the twisted relationship between a mother and son, with incredible urgency.