Nancy receives a letter meant for a British heiress who has the same name and, in her attempts to contact the other young woman, faces danger from a man who operates a Lonely Hearts Club mail fraud.

Teenage detective Nancy Drew uses her courage and powers of deduction to solve the mysterious happenings in an old stone mansion. After receiving a call from her friend Helen Corning, Nancy agrees to help solve a baffling mystery. Helen's Aunt Rosemary has been living with her mother at the old family mansion, and they have noticed many strange things. They have heard music, thumps, and creaking noises at night, and seen eerie shadows on the walls....

The eighteen-year-old girl detective must find a man who has been missing for years in order to locate the other half of a treasure map.

While trying to help a friend out of a difficulty, teenage detective Nancy Drew has a perilous experience in and around a deserted bungalow.

"Despite warnings from a stranger, Nancy, Bess, and George travel to France to search for a flight of 99 steps to solve the mystery of a friend's strange dream. During her search, she must contend with the sinister Monsieur Neuf and help her father uncover who is frightening a wealthy financier into selling large amounts of securities."

Nancy Drew and her two friends help uncover a gang of swindlers while vacationing in a seaside town.

Nancy and her friends establish headquarters in a seaside yacht club to investigate strange happenings in a book store and the disappearance of a marble statue.

"Nancy Drew, forget the ghost hunt!" a male voice rasps on the telephone. Despite the mysterious warning, the pretty teen-age detective and a group of friends start out on a ghost-hunting expedition to investigate five places reputed to be haunted. Danger strikes at once when Nancy tries to overtake the canoe that paddles itself on Lake Devanee. Thrills and chills mount as the ghost hunters pursue a phantom horse and ghost rider racing across the...

Nancy Drew travels to New York to unravel the mystery surrounding her aunt's neighbors and the sacred fire dragon. Juvenile fiction.

At a doll collector's request for help, a young sleuth searches for an old album, a lost doll, and a missing gypsy violinist.