From the New York Times bestselling author of The Only Good Indians comes a gripping high-speed chase novel pitting a runaway teen and her unsuspecting friends against a relentless serial killer on a dangerous road trip where survival is anything but guaranteed.Sixteen-year-old Harper has decided to run away from home after she has another blow-out argument with her mother. However, her two best friends, little sister, and ex-boyfriend all stop her from hitchhiking her way up Route 80 in Wyoming by joining her on an intervention disguised as a road trip. What they don't realize is that Harper has been marked by a very unique serial killer who's been trolling the highway for the past three years, and now the killer is after all of them in this fast-paced and deadly chase novel that will have your heart racing well above the speed limit as the interstate becomes a graveyard.