Another exciting mystery begins for the young detective when her friends Bess and George ask her to investigate a rumor that their wealthy great-granduncle, Asa Sidney, is virtually a prisoner in his own mansion. But solving the mystery and befriending Carol Wipple, the sixteen-year-old foster daughter of the caretakers of the old mansion, nearly costs Nancy the friendship of Bess and George. It takes all of Nancy's sleuthing ability as well as diplomacy to save it.Nancy braves one danger after another to bring to justice the swindlers who are stealing Asa Sidney’s fortune. With only the sign of the twisted candles to guide her, Nancy uncovers hidden treasure and an amazing letter that ends a family feud and brings unexpected happiness to Carol.
Visiting George's Aunt Elizabeth in Connecticut, Nancy learns that a local dispute over a bicycle path and a rare bat species has the community divided, and a threatening phone call puts Nancy on the path of a killer.
Nancy, George, and Bess get ready to enjoy the luxuries of the brand new spa that's opening in town. But then Deidre shows up ~ and if her appearance isn't enough to put a dampener on things, someone starts to tamper with the food, and then some unwelcome little critters turn up on the facial brushes! Clearly someone is trying to sabbotage the spa... but can Nancy discover why and who?
When George takes a delivery job for a local pharmacy, three customers fall prey to lethal poisons that are substituted for medicine, and Nancy must solve the case before George is named a prime suspect. Original.
Visiting the White House, where George is interning as a photographer's assistant, Nancy watches a photo session of a priceless gold statue, only to be attacked by a thief who makes off with the statue. Original.