Nancy Drew arrives in Phoenix, Arizona, eagerly looking forward to a fun-filled vacation at Shadow Ranch, but abruptly finds herself involved in a baffling mystery. The ranch is being haunted by an unknown enemy. 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. Aided by her friends Bess...

Nancy, George and Bess are on a ski trip! They are having tons of fun, and Bess proves a natural for the slopes. She even wins a special award! But when the ski supply room is suddenly trashed, all eyes to Bess. It looks like she's a suspect this time around. Nancy is sure Bess is innocent, but how can she prove it? And just when it seems things can't get any worse, a snowstorm closes the road home. The Clue Crew is trapped at the ski lodge! Can Nancy...

"Nancy, George, and Bess are attending a three-day overnight camp at the local zoo. They'll get to spend lots of time with all of the animals and learn about them, too. The best part is, they will be helping the zookeeper make toys for the animals, just like real staffers! But when the toys the girls make by day are disappearing at night, it looks like everyone is a suspect! Can Nancy tame this wild case, or will the zoo animals be without anything...

The Clue Crew is headed to the mall for new school supplies. Right away it looks like the girls have a back-to-school mystery on their hands. Money is missing from the Pencil Box's cash register, and all fingers point to the clerk, Rodger. Nancy doesn't believe he's a thief, but she'll need to examine the facts first--good thing she bought a new notebook!

Nancy Drew has to find the mysterious ghost that seems to be haunting Twin Elms, and make sure no more prized possessions disappear under her nose.

"Bess's mom is on the board of Pet Crusaders, a local rescue organization, and hosts the charity's annual fundraising gala. Nancy, Bess, and George have attended the event ever since they were kids, and they're excited for this year's party, the theme of which is 2A Night on a Riverboat.3 The gala will feature blackjack, roulette, and a high-stakes poker tournament, and all proceeds will go to help stray animals. But when the charity money goes missing...

When a gang that uses parties as a cover for robberies victimizes a masquerade party Nancy is attending, the teen-age detective switches identity with her girl friend to solve the case.

While trying to locate a missing dancer who is about to gain a large inheritance, Nancy Drew finds a clue leading to the solution of yet another mystery.

Nancy Drew becomes involved in a double mystery concerning a haunted bridge and jewel thieves.

Nancy Drew's disbelief in vampires strains her relations with some of her oldest friends.