"With over 1.5 million copies sold . . . Chevy Stevens has garnered acclaim from literary giants, including Stephen King who called Those Girls "incredibly scary and suspenseful" and Gillian Flynn who called Still Missing "utterly absorbing." With The Hitchhikers, she forges new ground with a novel that will both terrify you and break your heart. On the remote Canadian highways in 1976, Tom and Alice set out to heal their fractured marriage. An RV,…