Nancy's mysterious letter —Keene, Carolyn.

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.

Mystery at the ski jump —Keene, Carolyn.

The blatant acts of a lady swindler posing as Nancy Drew arouse the suspicion of friends and local police against the real Nancy.

The ghost of Blackwood Hall —Keene, Carolyn.

When Nancy, Bess and George travel to the French Quarter in New Orleans to help recover stolen jewelry, they are lead to a deserted old mansion said to be haunted by a phantom organist.

Pit of vipers —Keene, Carolyn.

Nancy's good friend, Charlie, appears to be guilty of snake-napping from the River Heights Zoo. Meanwhile, George's brother, Scott, is being very sneaky and not acting like himself. Can these things be related? Nancy is ...

The secret in the old attic —Keene, Carolyn.

Nancy races against time to unravel the clues in a dead man's letters. If she succeeds, Philip March and his little granddaughter can be saved from financial ruin. It takes courage and ingenuity for the alert young det...

Case of the sneaky snowman —Keene, Carolyn.

During winter vacation Nancy investigates the disappearance of Sherlock the snowman and other events predicted by her friend Deirdre.

Stage fright —Keene, Carolyn.

Chick-napped! —Keene, Carolyn.

When the newly hatched chicks disappear from the classroom, Nancy and her friends have a job on their hands to find out who stole the baby chicks.

Cat burglar caper —Keene, Carolyn.

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...

The fashion disaster —Keene, Carolyn.

Nancy and her friends investigate the theft of a basket of gourmet dog biscuits that belong to the poodle, Lola, who is the star of River Heights fashion show for dogs.

Cooking camp disaster —Keene, Carolyn.

"Nancy, Bess, and George are excited to be spending some of their summer at Kid Kuisine, a cooking camp where they are going to learn how to make delicious treats from Chef Giorgio. At the end of the camp, they will be c...

Ticket trouble —Keene, Carolyn.

Nancy and her friends try to track down the culprit who stole Ned's fall fair tickets.

The secret of the golden pavilion —Keene, Carolyn.

Nancy and her friends go to Hawaii to solve a mystery involving an inheritance.

Stolen bones —Keene, Carolyn.

Nancy joins a paleontology dig looking for dinosaur bones and all goes well until an important find goes missing. It turns out that fossils can be worth millions and Nancy must now find the thief.

The secret of Shadow Ranch —Keene, Carolyn.

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.

Treasure trouble —Keene, Carolyn.

Eight-year-old Nancy and her friends Bess and George solve a mystery involving a missing treasure chest.

The Cinderella ballet mystery —Keene, Carolyn.

Nancy and her friends will perform in a ballet version of Cinderella, but the glass slippers have disappeared. The Clue Crew have to uncover Cinderella's slippers before the show time.

The hidden staircase —Keene, Carolyn.

The bungalow mystery —Keene, Carolyn.

Nancy investigates her friend's guardians, who are trying to steal her inheritance.

Wedding day disaster —Keene, Carolyn.

Disaster strikes Nancy's cousin's wedding when the wedding cake is rolled out with a piece missing.