Green River, Running Red was written by Ann Rule, one of the most prolific and respected true crime authors of her time. She originally intended to write this book in the mid- to late 1980s, when it was widely believed that the infamous Green River Killer would soon be caught and prosecuted. Instead, the case dragged on for decades. It wasn’t until 2001 that law enforcement finally identified the killer — and not until late 2023 that he was definitively put away for the rest of his life.