Most Popular Books by Carolyn Keene

When Paula DeJagger, an exchange student staying with one of Nancy’s friends, begins acting strangely, Nancy investigates and discovers that Paula and other exchange students are being blackmailed to commit crimes.

When Nancy Drew’s new neighbor, Nikki Masters, is questioned about her boyfriend’s murder, Nancy—convinced of her friend’s innocence—investigates the crime.

The Pineview girls’ soccer team attempts to raise money by selling a pair of brooches, but a thief who substitutes phonies may bring disgrace on the school if Nancy cannot solve the case in this high-stakes high school caper.

Nancy mounts and investigation that leads to a series of dangerous encounters, an angry Doberman, a mystery assailant, and a life-threatening kidnapper.

George is upset. Everyone’s going on a field trip except her. Why? Because the teacher says she was passing notes in class. But she wasn’t. Someone was passing notes to her! Maybe if Nancy can find out who did write the notes, the teacher will change her mind. The funny thing is, Nancy has to find someone who really likes George!

When she learns that the recently widowed Mrs. Kittredge is making regular visits to a fortune-teller and turning over large sums of money to Madame Destiny, Nancy decides to investigate.

Nancy goes behind the scenes at the circus and finds big trouble under the big top. Nancy’s in Sarasota, Florida, winter site of the Grand Royal Circus, to help trapeze artist Natalia Petronov look into her heritage. Adopted as an infant, Natalia is now determined to find her real father. But as Nancy searches for clues in a shadowy past, one thing becomes instantly clear in the present: Natalia’s life is at risk! Natalia flies through the air with the greatest of ease—until someone messes with her trapeze. And whoever’s playing tricks is definitely not clowning around. The circus of danger is about to begin, and in the center ring lies a deadly secret. The search for the truth could lead Natalia—or Nancy—to take a hard fall…without a net!

Nancy and her friends investigate mysterious events taking place in an amusement park.

Unless Nancy can win the money in the Independence Day Rodeo, she’ll lose her beloved ranch. Before the rodeo, Tammy Calloway is thrown from her horse in what appears to Nancy to be a set-up. Determined to find out who wants Tammy out of the race, Nancy gets in deep—as the West gets even wilder.

When Nancy’s English postage stamps disappear before she can display the on her pen pal poster for Parents’ Night, she has to discover who has taken them, and why.

As Nancy’s summer vacation in the Hamptons draws to a close, she struggles to choose between Ned, her longtime beau, and the handsome dancer Sasha, and she investigates the kidnapping of a millionaire’s daughter.

At Camp Treehouse, Nancy’s bunkmate Lauren is having a crummy time, because someone has stolen her camera. Nancy investigates, follows the clues, and helps her new friend.

"I''m the best!" "No, I''m the best!" Who is the best detective of all? Nancy Drew''s special detective notebook is gone! And, boy, is she in trouble. Inside were three passes - for her, Bess, and George - to the most spectacular movie of all time, Star Quest 2. Sure, Nancy''s friends will forgive her...maybe in a million years. Even worse, Jason Hutchings is looking for the notebook - just to prove how easy it is to be a detective. One thing''s for sure: these days, it''s not easy being Nancy Drew!

Is there a clue in the mysterious stagecoach? Who will find it?

Nancy investigates the kidnapping of Caterina Reigert by posing as the writer of the girl’s father’s autobiography.

Nancy and her friend, Bree, discover that Tahiti is no paradise as they search for the truth behind the death of Bree’s mother in a freak accident five years ago.

Nancy has just two days to help her friend and save the ballet! Nancy and her friends are practicing for the big ballet recital. They''re so excited, and nervous too. Especially Bess, who can''t seem to learn the steps. But then the special music goes missing and the recital might be canceled. Everyone blames Bess and Nancy must take the case!

A Civil War reenactment should be fun, right? Not in our town! It feels like war fever''s taken over. The tension started to build when we all chose sides. Confederate and Union sympathizers never did mix. And if that wasn''t enough to heat things up, someone started to secretly dig large holes in the battlefield. Pretty odd -- and very suspicious. Is someone waging a little war of their own, and trying to cheat? And if so, the bigger question is why?

What secret life-giving power does the exquisite ivory elephant charm contain? Can the trinket really protect its wearer from all harm? Nancy Drew finds out when the owner of the Bengleton Wild-Animal Show asks her to investigate one of the performers who may be involved in some mysterious illegal scheme.The girl detective’s assignment becomes complicated when the elephant trainer’s young assistant, Rishi, seeks refuge at the Drew home from his cruel foster father, Rai.While following clues to help the boy find his real father, Nancy learns about an eerie abandoned house. She is harassed by its strange owner, Anita Allison, and the fiendish Rai. How Nancy uses the ivory charm, reunites a maharaja with his son, and brings the evildoers to justice will mystify readers from beginning to end.

While vacationing in Paris with her friends Beth and George, seventeen-year-old Nancy pursues a mystery involving a puppet theater and a long-lost treasure.

SOMEONE''S PLAYING PRACTICAL JOKES -- BUT MEAN MR. DALY ISN''T LAUGHING! Nancy''s class is going to the zoo on Friday, but first they have to survive a week with their strict substitute teacher, Mr. Daly. And things aren''t looking too good: someone is playing practical jokes on him, and he''s threatening to cancel the trip! First a sign saying OLD MEANIE is taped to his back. Then someone puts a fake goldfish in his water glass. But who would want to miss a fun trip to the zoo? If Nancy doesn''t find out, the joke will be on the whole class -- and that''s not funny!

CIRCUMSTANTIAL EVIDENCE DOESN''T PROVE THE IDENTITY OF CRAFTY THIEVES! Nancy''s friend Bess has been hired by Special Effects, a River Heights company, to decorate Albemarle''s department store for the holidays. When Bess discovers that her friend Ali Marie is now working at the store, she''s thrilled -- the two of them can have lunch and try on clothes for fun! But when some dresses are swiped, Ali is accused of stealing, and the party''s over. Sure of her friend''s innocence, Bess calls in Nancy to help find the real thief. With all the suspects and misleading clues, Nancy and her friends are running in circles -- and the holiday shopping rush isn''t helping! Can they figure out the identity of a clothes-hungry kleptomaniac before the holiday season turns sour?

SOMETIMES, YOU REALLY HAVE TO WATCH WHAT YOU EAT.... At Haunted Harriet''s restaurant you can have Boo Burgers, Franken-furters, and Monster-Mash Potatoes. But for Nancy, the real trouble is the creepy, crawly cake that goes ker-plooey! When a snooty birthday girl gets cake-slimed, Nancy may get the blame. But make no mistake, Nancy will find out who really put the glop in the cake -- no matter who''s cooking up trouble!

When Carson Drew’s millionaire client Clayton Grove dies of a long illness, Nancy is determined to see that the wrong person doesn’t inherit his fortune.

Nancy is working the phone lines for the Help Is Here teen hotline—but she receives one call that requires more than a sympathetic ear. A volunteer at the teen center has been murdered, and now the only witness is in danger of losing her own life. Time is running out for Nancy and her anonymous caller.

Teenage heir Hal Colson has been kidnapped, and Nancy knows it will take $475,000 to get him back. Lance Colson, Hal’s handsome uncle and guardian, is convinced that the punk rockers Hal hangs out with are responsible. Nancy gets nervous when she and George are caught casing one of the punk rockers and taken to their hideout—especially when one pulls a gun. But are the punk rockers to blame?

Nancy checks into a luxury hotel where danger comes free of charge. While Nancy investigates threats against Italian-born student Gina Fiorellao, Gina targets Ned Nickerson for romance. Nancy uncovers secret ambitions and sinister desires that could prove fatal—not only for Gina, but for Nancy as well.

Nancy goes undercover as an investigative reporter after threats are made on the life of handsome WRVH-TV News anchorman Hal Taylor. The evening news is filled with violence, ambition, and greed—and that’s just behind the camera! Can Nancy get to the bottom of who’s after Hal in time?

Things are really heating up at the hottest restaurant in town. Nancy finds that the grease fires, vandalism, and poisoned food are linked to the vault of a nearby mansion and the Dragon’s Eye Ruby. Someone is cooking up one of the most daring criminal schemes in River Heights history!

Nancy Drew’s rafting trip with friends lands them in hot water in this fast-paced mystery. When Nancy’s friend George wins a contest for a free white water rafting trip, she heads out to the remote location for some outdoors fun with Nancy, Bess, and Ned. But they end up spending more time in nature than they anticipated when a saboteur turned murderer has them running for their lives.

While staying at the exclusive Spa Solaire outside Tucson, Arizona, Nancy and her friends witness a series of strange events, beginning with sabotage and ending with a kidnapping.

The Internet...a world without rules, without boundaries. And it’s all just a click away... Ryan Corrigan is not what most people would call a “cool” guy. He’s usually called something more like geek or cyber-nerd. Maybe it’s because he and his mom move almost every year, so he never gets a chance to make friends. Or maybe it’s because he spends most of his time glued to his computer. It’s his friend. But now Ryan’s “friend” has gotten him into some big trouble. If Ryan doesn’t find a real ally fast, he could end up in jail—or worse, a victim of a terrible “accident.” Different people in different places—the one thing they have in common is a new address on the Internet: Danger.com. Where all your fears come true…

On a tour of the National Aquarium in Baltimore, Nancy is asked to look into a series of threats against the staff. But the controversial curator, whose stand against industrial pollution had sparked conflict, is immediately killed. Nancy races to solve the crime before the murderer strikes again.

Nancy, unaided, seeks to find a missing will, and the search not only tests her keen mind but also leads her into a thrilling adventure.

Emily Foxworth, a top photojournalist, invites Nancy, George, and Hannah to visit San Francisco, but when Emily is kidnapped, Nancy looks for some connection with Emily''s last assignment.