Piano teacher Missy Jenkins gets embroiled in a series of murders in her small town of Middletown, Pennsylvania, when she innocently distributes business cards with a message offering to help friends and neighbors investigate and solve their personal problems. After two men are murdered while carrying her cards, Missy becomes a "person of interest." She sets off to find out how a killer was able to get the cards. Police officer, friend and neighbor Mark Milner, forbids her to investigate. But with the help of Mark's wife and Missy's best friend, Ronnie, and 82-year-old neighbor Lorraine Withers, they defy the warnings to cease and desist. More murders ensue and Missy's life is threatened, before life returns to normal in the small town.