Mr. Mercedes by Stephen King, published in 2014 as the first book in the Bill Hodges Trilogy, follows retired detective Bill Hodges, haunted by the unsolved Mercedes Massacre, where a twisted killer drove a stolen luxury car into a crowd of job seekers, killing eight and injuring many others. Years later, a taunting letter from the perpetrator, dubbing himself Mr. Mercedes, reignites Hodges' obsession, pulling him into a tense cat-and-mouse chase against a cunning psychopath who hides in plain sight. Teaming up with unlikely allies like computer-savvy teen Jerome and the eccentric Holly Gibney, Hodges races to stop the killer's next deadly scheme, blending King's signature suspense, psychological depth, and gritty crime thriller elements.