Carolyn Keene 
Shadow of a Doubt [EPUB ebook] 

Nancy Drew puts her investigative acumen to the test in this thrilling installment of the Nancy Drew Files series. Nancy Drew is on a mission to prove the innocence of a man who spent five years in jail. But things take a terrible turn when she finds him dead on her first investigative visit. Who would go to such lengths to hide the truth? Nancy is determined to find out…