It's 1951, and twelve-year-old Pete Collison is a regular kid in Brooklyn, New York, who loves Sam Spade detective books and radio crime dramas. But when an FBI agent shows up at Pete's doorstep, accusing Pete's father of being a Communist, Pete is caught in a real-life mystery. Could there really be Commies in Pete's family? As Pete follows the quickly accumulating clues, he begins to wonder if the truth could put his family's livelihood--and even their freedom--at risk.