Fifteen year old Holly Potter has returned to visit her Uncle David Potter during a family reunion he planned at his home, only to learn that he was recently killed in a train wreck in Florida. Holly is afraid to face her relatives alone so she convinces Judy to pretend to be her redheaded older sister Doris. Judy plans to masquerade as Doris until she and Holly can learn why Holly's relatives are searching Uncle David's house and whether Uncle David is really the person who planned the family reunion. Soon Judy has more to investigate than scheming relatives. Is Uncle David's ghost haunting...

Horace plans to write a follow-up story to his feature article about the ruined castle owned by John Dent. It has long been rumored that John Dent and Hilma Joerg, former owner, are in the midst of a feud. Since Horace is sick, Judy and Peter visit the castle to see what they can discover. While outside the castle walls, Judy and Peter hear mysterious violin music playing from within the castle. They speak to Granny Joerg and her family and learn that nobody has seen John Dent in a long time and fear that caretaker Hiram Boggs may have concealed his death. They also learn that Granny Joerg's...

The one unsolved mystery from Judy's childhood is that of the haunted fountain on the Brandt estate. Judy visited the fountain one time and it told her to make a wish. She never did learn how the fountain spoke.After relating the story to Lois and Lorraine, the three girls visit the Brandt estate to see the fountain. After ignoring a "No Trespassing" sign, they are confronted by two men who threaten them. The girls leave but sneak back so they can visit the fountain. Judy finds a diamond in the fountain and wonders how it came to be there. Something is also bothering Lorraine, and it is...

"What do you mean?" Judy asks her new friend, Clarissa Valentine. "How could you look in a mirror and not see your reflection?" When Clarissa insists that this strange thing has happened to her, Judy and the other girls think she is teasing them. But when Clarissa disappears in the middle of a television show, even Judy has to admit something peculiar is going on. The three other girls are angry, because with Clarissa went the twenty dollars they had loaned her. But Judy still believes in Clarissa, though something certainly is very wrong. Judy wishes her FBI husband, Peter Dobbs, would...

When the FBI suddenly orders Judy's husband Peter to Washington, D.C. on a bank robbery case, the young couple is just about to start off on a trip. To cheer herself up after Peter's plane departs, Judy buys a corsage of snapdragons. Judy is wearing the corsage when she and Peter's sister, Honey Dobbs, decide to drive to New York City and spend a few days with Irene and Dale Meredith. On the way, the two girls nearly have a fatal accident. A handsome young stranger comes to their rescue and introduces himself as Mr. Nogard. What Mr. Nogard says when he sees Judy's corsage, and the mysterious...

The Judy Bolton books, written by Margaret Sutton, were a popular girls mystery series. Judy Bolton is in many ways a complex and believable role model for girls, primarily because of their realism and social commentary. Judy was also unique in that halfway through the series, she got married (something series book heroines rarely, if ever, did). The first 4 volumes were published in 1932. The series continued until 1967 and consisted of 38 volumes. Each book was "based on something that actually happened" and many were also based on real life sites.