Mr. Mercedes - Stephen King

A cat-and-mouse suspense thriller featuring a retired homicide detective who's haunted by the few cases he left open, and by one in particular - the pre-dawn slaughter of eight people among hundreds gathered in line for the opening of a jobs fair when the economy was guttering out. Without warning, a lone driver ploughed through the crowd in a stolen Mercedes. The plot is kicked into gear when Bill Hodges receives a letter in the mail, from a man claiming to be the perpetrator. He taunts Hodges with the notion that he will strike again. Hodges wakes up from his depressed and vacant retirement, hell-bent on preventing that from happening. Brady Hartsfield lives with his alcoholic mother in the house where he was born. And he's preparing to kill again. Only Hodges, with a couple of misfit friends, can apprehend the killer in this high-stakes race against time. Because Brady's next mission, if it succeeds, will kill or maim hundreds, even thousands.