Nancy must figure out the connection between a mysterious diary and a suspicious house fire.

When Nancy receives a letter informing her she’s heir to a fortune, she decides to track down the sender, as well as the other Nancy Drew.

Blue bells will be singing horses! This strange message, attached to the leg of a wounded homing pigeon, involves Nancy Drew in a dangerous mission. Somewhere an elderly woman is being held prisoner in a mansion, and Nancy is determined to find and free her. Meanwhile, the young detective’s close friend, Helen, begs her to solve a second mystery. Helen’s grandparents, the Cornings, are frightened by a sinister wheel of blue fire that appears after dark in the woods outside their home at lonely Sylvan Lake. When Nancy discovers the significance of the eerie signal, she also learns that her two mysteries are connected.

When Black Creek Farm's food is discovered to be contaminated, Nancy Drew comes in to investigate whether or not the food has been sabotaged.

Nancy finds herself in danger when she tries to solve the mystery of the old inn, believed to be jinxed.

A young Frenchman consults Nancy Drew for help in unraveling a mystery surrounding his ancestors.