Most Popular Books by Carolyn Keene

Nancy goes to wyoming to find a missing heiress.

A SAD STORY FOR A HAPPY DAY Nancy's teacher is getting married, and the whole class has chipped in to get her a gift. Bess was put in charge of the money, and now she's horrified. The money has just disappeared! It's almost time to say, "I do." But who took the money? Everyone is saying: "I didn't. I didn't." And Nancy doesn't have a clue. Not yet. But she will . . .and what a surprise it will be!

The final installment of the romantic trilogy that began with Swiss Secrets and continued with Rendezvous in Rome, Nancy and her friends find themselves in a sea of danger as they journey to the exotic Greek islands. Three passports, including Bess’s, have been stolen from their hotel, and Nancy suspects they have fallen into the hands of international fugitives.

Nancy, Frank, and Joe investigate the murder of a real estate king's ward in Philadelphia. Nancy believes the accused is innocent while Frank and Joe believe he is guilty.

Challenging questions confront Nancy Drew when she attempts to solve the mystery of the strange tapping sounds in the house of a retired actress. Who is the tapper? How does he gain access to Miss Carter’s house, despite securely locked doors and windows? Why do the tapping sounds come in Morse code? Is there a sinister motive behind the prowler’s actions? While trying to learn the answers to these and other puzzling questions, Nancy finds her investigations complicated by the dishonest administrator of a will and by a thief who steals the actress’s prize Persian cats.

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.

A trunk that Nancy receives from her father for a trip to Buenos Aires becomes the center of a mystery.

When her friend's party is in jeopardy, Nancy takes the case! Rebecca Ramirez's birthday is just two days away, and she's having a slumber party. She made the invitations herself, with rainbow ribbon hair clips and everything. But now the invitations are gone. Somebody took them and the whole party is ruined. Or is it? Nancy Drew is on the case and maybe she can make sure Rebecca's birthday is a party after all!

A carrier pigeon furnishes Nancy with a clue to a mysterious retreat.

Nancy loves a good mystery. That’s why she, Bess, and George are volunteering at Persimmon Woods Pioneer Village, a living history museum of the 1830s. Nancy’s heard that a lot of weird things have been happening there, like the eerie sightings of the Lantern Lady­ the ghost of an original settler. But as soon as Nancy starts investigating, she learns that even though the workers at Persimmon Woods are in costume, the danger isn’t an act. Someone has concocted a cunning scheme to destroy the village—and if Nancy doesn’t find the culprit, she could become history, too.

SOMEBODY'S NOT PLAYING FAIR! Nancy, Bess, and George are going skiing. But the whole weekend is getting crazy. First some bratty boys play catch with Bess's hat. Then George's lucky necklace disappears! Not only that, but someone's getting very pushy on the mountain. It's up to Nancy to find out who's playing all the dirty tricks. Because someone's turning the snow fun into no fun at all!

Someone is playing a Ho! Ho! Ho-rrible trick on Nancy Drew! Christmas is coming, and Nancy's third grade class is having a Secret Santa exchange. That means cards, candy, and a special gift for everyone. Everyone except Nancy Drew! Is it a mistake? Is somebody just being silly or mean? Or is someone hiding something and afraid to tell the truth? One thing's for sure. Nancy's presents are gone, and all she has to unwrap is one big mystery!

Nancy and her friends find they have to overcome people's superstitions and fears in solving the case of a "jinxed" and threatened bird farm.

Another exciting mystery begins for the young detective when her friends Bess and George ask her to investigate a rumor that their wealthy great-granduncle, Asa Sidney, is virtually a prisoner in his own mansion. But solving the mystery and befriending Carol Wipple, the sixteen-year-old foster daughter of the caretakers of the old mansion, nearly costs Nancy the friendship of Bess and George. It takes all of Nancy's sleuthing ability as well as diplomacy to save it.Nancy braves one danger after another to bring to justice the swindlers who are stealing Asa Sidney’s fortune. With only the sign of the twisted candles to guide her, Nancy uncovers hidden treasure and an amazing letter that ends a family feud and brings unexpected happiness to Carol.

“No room at the inn” means someone wants Nancy to check out—permanently. There’s nothing like riding a horse across the beautiful English countryside, and Nancy has been looking forward to this vacation. But the danger begins even before she arrives at stately Moorsea Manor. Someone steals a road sign, sending Nancy down a dark, twisting road to nowhere. When she finally finds the inn, she’s almost killed by a bronze statue dropped from a second-story window. The owners tell her that there have been other “pranks” as well. And once someone gets hurt, the Moorsea Manor will be out of business. Now it’s up to Nancy to find the culprit—before the guest list becomes a casualty list.

When Nancy is told that a large inheritance from a Greek tycoon, meant for her friend Helen Nicholas, was stolen, she knows it’s up to her to find the culprit. But after following clues in the form of a poisonous snake in a basket of apples and a strange symbol stamped on a rare Byzantine mask, Nancy and her friends find themselves in the middle of a ring of art smugglers. Will they discover the secret of the Greek symbol and recover Helen’s inheritance?

A strange man appears at Nancy's old friend's island plantation brandishing a cutlass, and Nancy discovers a faded love letter with clues to the hiding place of a long-dead pirate's gift, an emerald necklace.

When Nancy and her friends notice an older couple stalking them in San Francisco, they begin an investigation that leads them to Hawaii.

Nancy finds herself in the eye of an Alpine storm of romantic intrigue, family scandal, and big-business on a trip to Switzerland.

An antique dealer’s revelation about a former queen’s priceless heirloom starts Nancy on a trail of exciting adventures. Madame Alexandra, now living incognito in River Heights, asks Nancy to find her missing grandson. With only one clue to go on – a faded photograph of the prince at the age of four – the young detective begins her search. Nancy’s investigation unmasks a slick imposter and reunites the long-separated family in this suspense-filled story.

Nancy Drew is on the run when someone starts playing tricks on her soccer team! Who let the air out of the soccer ball? Who added salt to the water on the sidelines? Who put the red glop in the goalie's soccer shoes? It's gooey. It's gross. It's not fair. Soccer is supposed to be a kick. But somebody's being a drag. Nancy Drew wants to know who's playing the silly games with her third grade soccer team

While visiting a local Japanese crafts village, Nancy investigates a clever and dangerous counterfieter. Reading level: 5.8. Age level: 5-8.

Nancy believes that the unexplained construction accidents at an Arizona fitness ranch are man-made, until a frightening encounter forces her to match wits with a Kachina ghost.

Nancy's best friends, Bess and George, may never speak to each other again. It all started because Bess wanted to jump rope. She asked George to hold on to her beautiful heart-shaped locket. George put it in her book bag to keep it safe. But when she went to give it back, the locket was gone! It's a mess of a mystery, but if Nancy Drew can find out where the locket went, she just might be able to get George and Bess to make up!

The disappearance of a seventeen-year-old girl leads Nancy into an intriguing mystery involving a castlelike building with a drawbridge.

Things are hairy in River Heights this holiday season. Two wolves have disappeared from WildWolf, the federal wolf preserve just outside of town. Local farmers think the missing wolves are killing their sheep, but there are also rumors of werewolf sightings nearby. At the same time, the annual River Heights Winter Carnival is set to begin. When the first two days of the outdoor festival are full of tragic disasters, Nancy can’t help but wonder—is there a link between the carnival's trouble and the missing wolves? After the carnival’s beautiful ice palace is destroyed, Nancy’s sure there’s a wolf at River Heights’s door. But is the leader of this pack of crimes human, or beast?

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

Kidnapped while trying to investigate the sinking of three freighters, Nancy finds herself on a hacienda in Colombia, where with the help of two friends, she tries to unravel the mysterious connection between the sunken ships and the strange events at the hacienda.

When a neighbor asks Nancy Drew to accompany her to an old uninhabited mansion, a new mystery opens ups, and danger lurks on the second floor. Nancy finds a witch tree symbol that leads her to Pennsylvania Dutch country in pursuit of a cunning and ruthless thief. The friendly welcome the young detective and her friends receive from the Amish people soon changes to hostility when it is rumored that Nancy is a witch! Superstition helps her adversary in his attempt to get her off his trail, but Nancy does not give up. Persistently she uncovers one clue after another. Nancy’s intelligence and sleuthing ability finally lead to the fascinating solution of this puzzling case.

Nancy Drew and friends Bess and George are all geared up for a bike tour in Ireland, looking forward to the scenery, romantic ruins, entertainment, and cozy inns. But soon the three friends realize that from the moment they arrived, someone seems to be targeting the tour members.An Accelerated Reader® title for ages 8 to 12.

Warnings not to go to Scotland can’t stop Nancy Drew from setting out on a thrill-packed mystery adventure. Undaunted by the vicious threats, the young detective – with her father and her two close friends – goes to visit her great-grandmother at an imposing estate in the Scottish Highlands, and to solve the mystery of a missing family heirloom. And there is another mystery to be solved: the fate of flocks of stolen sheep. Baffling clues challenge Nancy’s powers of deduction: a note written in the ancient Gaelic language, a deserted houseboat on Loch Lomond, a sinister red-bearded stranger in Edinburgh, eerie whistling noises in the Highlands. Startling discoveries in an old castle and in the ruins of a prehistoric fortress, lead Nancy closer to finding the solution to both mysteries.

Thrilling, dangerous adventures confront Nancy Drew while on a safari in East Africa with a group of American college students. Excitement runs high as the teen-age detective delves into the theft of a fabulous sapphire formed by nature millions of years ago. The mystery starts in Nancy’s home town. Her lawyer father’s client, Floyd Ramsay, who fashions beautiful and unusual synthetic gems, is accused of stealing the magnificent spider sapphire and exhibiting it as his own creation. Mr. Ramsay’s enemies blackmail him and by their vicious acts try to deter Nancy from going on the safari. Readers will join Nancy as she uncovers a nefarious scheme and solves the strange disappearance of an injured jungle guide.

In a response to a friend’s call for help, Nancy’s father, a lawyer, asks her to travel to mysterious Crocodile Island with her friends Bes and George to study the reptiles and try to uncover a group of suspected poachers. Upon their arrival in Florida, the girls are kidnapped but cleverly escape to pursue their detective work. Dangers mount as they cope with reptiles, enemy boats, and exciting chases after the men who are responsible for a sinister racket that involves many unsuspecting victims. In the end, Nancy makes a bold move to untangle the mass of clues, but she and Ned become imprisoned in the enemy’s submarine and are held for ransom!

Teenage detective Nancy Drew uses her courage and powers of deduction to solve the mysterious happenings in an old stone mansion.

While driving a motorboat around the Twin Lakes, Nancy and her friend Helen get caught in a dangerous storm. Luckily, they are rescued by another teenage girl in a rowboat. They soon learn that their rescuer is Laura Pendleton, whose mother has recently having passed away. Laura has come to meet up with her new guardians, but something isn't quite right about them. Nancy investigates the situation, and soon she stumbles upon a shocking surprise in the cellar of a bungalow