Nancy arrives in Phoenix, Arizona, eagerly looking forward to a fun-filled vacation at Shadow Ranch but finds herself embroiled in a baffling mystery involving a phantom horse and buried treasure. Local people believe that the ghostly animal is carrying out the curse of Dirk Valentine, the romantic outlaw who was killed many years ago at Shadow Ranch, where he had gone to fulfill a promise to his sweetheart. Suspecting that a treasure hidden by Valentine...

Nancy witnesses the malicious burning of a stately home, and becomes convinced of the prime suspect's innocence.

Nancy, George, and Bess have been invited to an April Fool's Day party at their new schoolmate's house, with each guest bringing a gag to the party and the best prank winning a special prize. When two of the guests' fancy new electronics go missing, Nancy knows it's no joke, and the Clue Crew are on the case to find the missing gadgets.

"River Heights is hosting its first fashion show -- for dogs! Proceeds will go to the Rollover Rescue animal shelter. The Clue Crew is excited because not only will the day be filled with tons of cute pooches, but Nancy's own puppy, Chocolate Chip, will be a model in the show! But of course, there are some bumps along this fashion show's runway when someone steals a special basket of gourmet dog biscuits. They belong to doggy-diva Lola, a fancy poodle...

The young sleuth searches for a treasure hidden in a city now buried under the Nevada desert.

Once again Nancy Drew is involved in a mystery as she tries to locate an archaeologist who disappeared with the clues to a buried treasure.

Nancy Drew must use clues in a dead man's letters to find some unpublished musical manuscripts that will save an old man and his granddaughter from financial ruin.

A life-size puppet is haunting the Van Pelt estate and Nancy Drew must solve the mystery.

When an amnesia victim appears in River Heights with a royal Hindu ring in his possession, Nancy Drew is called in to help learn his identity.

While vacationing in the Midwest with her friends, Nancy Drew investigates a mysterious magnetic cloud, searches for a hijacked plane, and hunts a horse thief.