The American Grand Opera has come to River Heights to perform Tosca, Aida, and The Marriage of Figaro, and Nancy's friend Bess is going to be a chorus extra. It's all so exciting for the girls; the costumes, the music, the glamor! Little do they expect, though, the drama that will take place backstage. When a falling sandbag from the scenery catwalk nearly misses the two female stars of the opera during a dress rehearsal. Nancy begins to suspect foul...

Nancy Drew comes to the aid of the owners of a local dancing school when they receive an anonymous note threatening their lives.

Nancy is given an aerial view of a burglar entering her home during a Honolulu vacation.

Pete's Pets has adorable new kittens in the shop, but are they stolen and is Nancy Drew's archenemy Deidre Shannon involved? Nancy and her friends investigate when kittens go missing from the River Heights Animal Shelter.

Nancy Drew sets out to prove that her father's client was unjustly accused of trying to sabotage the United States space program.

To celebrate her birthday, George is taking Nancy and Bess on a bike tour around Mystic Lake, but when their tour guide disappears and unknown adversaries steal their supplies and slash their tires, Nancy begins looking for clues.

Embarking on a dream vacation in Nantucket, Nancy, Bess, and George attend the opening of an exhibit at a local museum where a vandal has left a threatening message, prompting the girls to investigate numerous suspects.

People at Black Creek are getting very sick from fresh fruits and vegetables crawling with deadly bacteria and Nancy is going to find out who is responsible for sabotaging the Heyworth's farm.

When competition for lucrative prizes ranging from money to placement on the Olympic Team escalates to the point where one desperate participant drugs horses at the River Heights Horse Show, Nancy, Bess, and George track clues to identify the culprit.

Nancy, Bess, and George are on an Alaskan cruise when things start to go awry.