When the rubber duckies for River Heights's duck derby go missing, Nancy and her friends are ready to quack the case in the sixteenth book in the interactive Nancy Drew Clue Book mystery series.River Heights is hosting a duck derby to raise funds to install new benches by the pond in the park. Nancy, Bess, and George want to help, so they ask Mayor Strong if they can number the rubber duckies that will be used in the race. It's a big responsibility, but they know they can do it. Then the box holding the duckies goes missing from Nancy's doorstep! The girls need to find the duck-napper fast, but there's a flock of suspects. Where do they even start without even a squeak of a clue? Will the Clue Crew figure out who flew off with their rubber duckies before the Mayor finds out they're gone?

Nancy, Bess, and George must find the truth behind a photographic mystery in this nineteenth book of the Nancy Drew Diaries, a fresh approach to the classic mystery series.Nancy and her friends are spending the weekend in a small mountainside town called Shady Oaks. The local museum is displaying a never-before-seen collection from famous nature photographer, Christopher DeSantos. So the usually sleepy town is now filled with tourists. But it's not just the dramatic lighting of the old black and white photographs that people have come to see. Newspapers all over the country have picked up the story of two visitors who went missing in Shady Oaks only to turn up in the old DeSantos photographs, seemingly frozen in time. What's more, there was a rumor that DeSantos was cursed by his former partner after a disagreement. Now everyone is wondering if the legend is real. Nancy, Bess, and George are convinced that there is another explanation to be found. But it...

In Buggy Breakout, spring has sprung, bringing...bugs? The Clue Crew must use their best detective skills to recover the Bug Club’s prize insect.

Nancy's cases are more mysterious than ever with exciting three book plot arcs!

NANCY WITNESSES A VIRTUOSO PERFORMANCE PLAYED IN THE KEY OF D. . . FOR DANGER Nancy has come to Westbridge, Massachusetts, nestled in the Berkshire Mountains, to attend a world-famous piano competition. Soon after her arrival she discovers that one of the finalists, Ted Martinelli, has set his sights on something other than first prize. He has his eye on Nancy, and he's playing a very romantic tune... But for Nancy, the urgent question is: Will Ted survive the competition? Each of the three finalists has faced a deliberate and mysterious threat, and Nancy knows it's only a matter of time before one of them is hurt. . . or worse. She's uncovered a symphony of sabotage, ambition, and blackmail — and the climax could prove deadly!

Nancy and her friends laugh at the notion, published in the National Snooper magazine, that the queen of the planet Zagon has arrived on Earth, until the next day, when their substitute teacher turns out to be a Mrs. Zagon.

Nancy's father has been kidnapped in New York City, and Nancy may be his last chance to come out of it alive.

Nancy must find the missing music tape before 3:00 on Sunday or else the ballet recital will be cancelled.

Bess soon regrets answering the personal newspaper ad when her blind date threatens to kill her! Best friend Nancy Drew takes the mystery into her own hands. Can she crack this newspaper case--or will she end up in the obituaries? A ges 12 and up.

While enjoying a fabulous party hosted by wealthy Joanna Tate, Nancy finds herself investigating a major jewel theft. Joanna's newest prize -- a diamond and ruby necklace -- is missing. And since Joanna hasn't kept the necklace a secret, Nancy has plenty of suspects. Her chief problem is rookie police detective John Ryan, who wants to nab the thief himself. But a rash of copycat robberies -- and some devishly original murder attempts -- convince Nancy to collar the country club burglar right away... or pay dearly later.

Nancy, Bess, and George look for Nancy's missing father in the twenty-second book in the Nancy Drew Diaries series, a fresh approach to a classic series.While Nancy's dad is away at a conference in Washington, DC, she invites Bess and George over for a slumber party. The girls are having a great time until Nancy gets a call from a number she doesn't recognize. Her dad never showed up for his panel and he isn't in his room. No one's seen him since the night before, and he isn't answering his phone. Worried, Nancy and the gang hop the next flight to DC to investigate. The girls scour the hotel for clues with little luck until Nancy finds her dad's cell phone in the hotel basement. She's pretty sure he left her a message on the home screen, if only she could figure out what it means. The hunt takes them across the US capital, retracing Mr. Drew's steps to figure out what went wrong or who might be out to do him harm. If they don't solve this mystery, it may...

Nancy investigates a classic case of musical mystery and suspense. Violinist Deirdre Thompson is vying for top honors in Seattle's most prestigious musical competition, but Nancy finds that something about the contest strikes the wrong chord. The concert hall is the focus of a criminal conspiracy, and Deirdre, who is blind, is the first to sense trouble—and the first to face danger! Nancy vows to discover who wants Deirdre out of the contest and out of the picture.

When Nancy searches through the knapsack of an amnesia victim, she finds an unusual ring. Before long, she is caught up in a second assignment from a beautiful harpist. Nancy's discoveries reveal an important connection between the hospital patient, the harpist, and enemies from abroad.

The International Friendship Club is sponsoring a fun weekend—but Nancy finds a melting pot of sabotage! For Nancy and her friends, Worldbeat Weekend at Emerson College is supposed to be a good time. Nancy gets to spend time with her boyfriend, Ned, and everyone plans to enjoy music and food from around the world. But the two candidates running to be the next president of IFC are from rival countries, and when they accuse each other of smearing their campaigns with dirty tricks, the chaos begins. Missing money and collapsing tents are just the start of the trouble. As tensions rise, the weekend spirals toward disaster. The local press is sniffing around. A public scandal would ruin IFC, and only Nancy can uncover the clues to track down the culprit in time!