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Detective brothers Frank and Joe investigate a stolen robot in the thirteenth book in the interactive Hardy Boys Clue Book series.Frank and Joe are excited to join Chet as he gets a preview of Robo Freeze, Bayport's newest sweet treat phenomenon. But Robo Freeze isn't just any ice cream shop—Sherbot the robot scoops and tops your cone to your exact specifications. But just before his big debut, Sherbot is bot-napped! Who'd want to sabotage Robo Freeze before their grand opening? Can the Hardy Boys track down the culprit and get back the robot, or will they be left with a melty mess?

When wildlife celebrities come to Bayport Elementary, Frank and Joe are soon on the case of a missing snake in this Hardy Brothers Secret Files adventure.Jumpin'Jack and his son, Little Jim, have been on television for years, taming tigers and wrestling alligators, but now they're bringing their traveling menagerie to schools—and Bayport Elementary is next! During the event, they show students a baby kangaroo, a boa constrictor, a flying squirrel and other exotic animals. Frank, Joe, and their friends are all having a great time, until they realize Bubba the Boa is missing! He's not in his cage or in Jack's giant van. Can they figure out what happened to this slippery snake before it's too late?

A medieval faire brings the past to life—and a mystery to the present—in this Hardy Brothers Secret Files adventure.Frank and Joe Hardy are excited to visit the King Arthur Faire in Bayport. On Kid's Day, there are all kinds of special contests and events, like the Medieval Maze and Junior Jester Court Slam. The highlight of the day is the Junior Joust competition: whoever can stay on a mechanical horse and lance a golden ring with their (fake) sword will win seats to watch the real jousting competition later in the day.To everyone's surprise (and delight) Joe and Frank's friend, Chet Morton, manages to lance the ring and beat out town bully, Adam Ackerman. But after celebrating the win at a pizza stand, Chet discovers his ring—and ticket for the grand prize—is missing! Can Joe and Frank figure out who is the rogue knight before the big show?

Frank and Joe vote to solve the mystery of who sabotaged their friend's election speech in this Hardy Boys Secret Files adventure.The Bayport Elementary elections are coming up, and Chet Morton is running for class president against Cissy Cimero. Frank and Joe have done everything they can to help their friend. They've made posters, handed out buttons, and helped him write one of the best campaign speeches in Bayport history. When the day of the election finally comes, they know every vote will count. But when Chet gets a rude surprise during his speech, everyone is shocked. Who would want to ruin Chet's speech? And how did he or she manage to pull off the prank? Can Frank and Joe figure out what happened before the election is called in Cissy's favor?

A missing dinosaur tooth makes for a massive investigation in this Hardy Brothers Secret Files Mystery.Frank and Joe are excited for their field trip to the Bayport Museum of Natural History with their science club. Not only will they get to see some awesome dinosaur skeletons on display, but they also get to go on their very own fossil dig on the museum grounds. At the dig, fellow classmate Tico uncovers an old dinosaur tooth—even though Tico's biggest competition in the club, Aisha, claims she found it first. And when Tico realizes his tooth is missing—a tooth that turns out to be immensely valuable—all signs point to Aisha. But is she really the culprit? It's up to Frank and Joe to dig deep for the answers in a case that is bigger than they ever imagined!

Frank and Joe solve a mystery on the high seas in this Hardy Brothers Secret Files adventure.It's finally summer vacation, and the Hardy family is headed on a cruise to the Caribbean. As they board the ship with their parents, Frank and Joe can't believe all the fun that's in store for them. There are three-story slides, playgrounds, ball pits, four pools, and an arcade. There are concerts and magic shows at night, while jugglers and clowns wander the deck during the day. In addition to all of the fun, the Hardys discover that former pop idol and lead singer of the Lightening Bolts, Izzy, is now performing on the ship. That night, as the family eats dinner, they hear a commotion at the other end of the massive dining room. Someone has stolen a very valuable and sentimental pocket watch from Izzy. Can Joe and Frank solve the case before the ship docks in the first harbor? Or will time run out on this case?

Frank and Joe are going on a weekend camping trip with their friend Chet Morton and his family, but once they set up camp, strange things start to happen. The boys see a slimy, black tentacle slithering into the water. Could it be a relative of the Loch Ness Monster?

Frank and Joe are learning some awesome moves in karate class. But somebody steals Brian Ludlow's black belt signed by action-movie hero Jimmy Han. Brian even promised to bring Jimmy to class, but now he says, “No way!” But maybe if the Hardys can find the belt, they'll be the true-blue action heroes of the day!

Pineview Lake is the perfect place for some serious ice fishing, some hard-hitting hockey—and some chilling criminal activity. A rash of break-ins has left dozens of homes ransacked, and the Hardys are determined to find out who's responsible. But as they turn up the heat on their investigation, they find themselves in the line of fire…

Bank alarms are going off all over Bayport, but the robberies are actually happening at banks on the other side of town. The Hardys realize that the crooks are using a crisscross plan as a diversion, but what they don't realize is that the heist is much bigger than they had imagined.

The Hardy Boys head to Oklahoma, where crime is spinning out of control in the wide-open spaces of tornado alley. Frank and Joe encounter a bizarre phenomenon: the aftermath of a fierce twister that defies scientific explanation. To get at the truth, the Hardys will have to put themselves in the path of destruction—and face the explosive fury of a criminal mastermind.

A robot robbery suggests science fair foul play in this Hardy Boys Secret Files mystery.It's time for the annual Bayport Science Fair, and Frank, Joe, and their friend Phil are determined to have the winning entry. With their spiffy homemade robot, they are convinced they can finally top their classmate, Cissy Zermeno, who has won the past two years. But right before the boys are about to bring Mr. Roboto to the fair, Phil discovers that their prized creation has gone missing! Did town bully (and usual suspect) Adam Ackerman steal him out of jealousy? Or was Cissy worried she would have to settle for second place this year? It's up to the boys to figure out how Mr. Roboto found his way out of Phil's garage. Will they get him back in time to compete?

The boys track down an unusually undead suspect in this Hardy Boys Secret Files mystery.Bayport is buzzing with excitement when a film crew sets up shop to film the latest zombie flick. Frank, Joe, and their friends are really psyched that there will be fake zombies running around town—not to mention a famous director and some of their favorite actors. They are hoping for a sighting or two, and maybe even an autograph, if they're lucky! But things get a little too real when one of the boys'friends claims he saw an actual zombie in Bayport—nowhere near the shoot. Is someone just pulling a crazy prank? Or is the movie starting to take on a life of its own?

Frank and Joe are on a case that really pops in this Hardy Brothers Secret Files Mystery.The Green Crawler is one of the coolest superheroes around, and Frank and Joe are some of his biggest fans. And thanks to a contest, the Hardy boys get to be two of the handlers for the new Green Crawler balloon in the annual Fall Festival parade in Bayport! But the day before the parade, disaster strikes: someone has ripped the Green Crawler balloon! The people in charge think Joe did it—and the Hardys need to clear his name fast. Was it Bayport bully Adam Ackerman, who was green with envy that the Hardys won the contest? Or could the culprits be loyal fans of Nutty the Squirrel, the cartoon character whom the Green Crawler replaced? And Mo Mantis, the Green Crawler's archenemy, has a few tricks of his own… Can the brothers figure out who tried to ground the Green Crawler? Or will Joe and Frank be watching the parade from the sidelines this year?

A thrilling amusement park ride turns diabolically deadly in this Hardy Brothers adventure—a fresh approach to a classic series. Joe and Frank Hardy are attending the season's opening night at Funspot, a local amusement park that's been declining for years, but that recently got new owners and a facelift. Their friend Daisy's family has everything riding on Funspot's success: If the revamped park is a failure, her family will be broke! At first, an exhilarating new attraction is a huge hit—but when one of the riders disappears into thin air, fun and games turns into spine-tingling danger. Will the Hardy Brothers find the missing rider and restore Funspot's reputation, or is the amusement park doomed for disaster?

A special effects master has brought an exhibit of dinosaur movie models to Bayport Elementary. But before Frank and Joe can check out the prehistoric beasts, the best model vanishes. Now the boys face a monster of a mystery as they set out to save the dinosaur—and save the day.

Frank and Joe are working on a new case...and it just might blow them away!The exclusive Billington Resort in Phoenix, Arizona has two high-profile events on Saturday: a vintage car auction and a celebrity wedding. They also have something they didn't sign up for: a bomb threat. Frank and Joe have just eight hours to find the bad guys and the bomb. If they fail to do so by 3:00 PM, the entire resort will be blown to bits.

A TRIP TO THE CIRCUS STIRS THE BOYS'SENSES—AND SUSPICIONS. Frank, Joe, and their friends head to Philadelphia to catch a performance of Aerocirque, an amazing circus act with a twist: The acrobats swing and flip from helicopters high in the air! But all is not well in the City of Brotherly Love. The other show in town is a series of robberies, and no one knows how they're being pulled off. Frank and Joe are soon jumping through hoops to find the clues they need to catch the culprits. But will they be too late? It looks like this mystery may come right down to the wire!

To catch this criminal, the Hardy Boys will have to break the law.In #6 Burned, Frank and Joe are on a mission to determine the structure of an illegal international C.D. burning operation that employs teenagers--and to sniff out the mastermind behind it. This case requires that the boys stay close to home--a little too close, in fact.

Follow Frank and Joe as they save the lives of in a local Karate school!ATAC sends Frank and Joe to investigate a possible connection between two unusually harsh accidents at a nearby Martial Arts school. Enrolling in the school, of course, allows the guys to collect some serious clues--and to discover that this case may lead them dangerously close to their own circle of friends.

Hardy Boys slam into the new century, cracking a host of new cases!Frank and Joe are sent to Niagara Falls to stop someone from destroying the national landmark. Then they're sent on another case. Then another. They're not usually this busy with ATAC, and their cases are usually more important than these. Seems this case might be more layered than a double dip with chocolate sprinkles....

Frank and Joe bring their detective skills to the athletic arena in this all-new Hardy Boys Secret Files mystery!It's time for Field Day at Bayport Elementary and all the kids are excited! Whatever grade wins gets a pizza party, and the person with the highest personal score also gets a special prize. But when the field equipment is sabotaged the day before the events are supposed to start, it looks like Field Day might not happen after all—unless someone can find out who is behind the mess of ruined rackets, tangled jump ropes, and flattened balloons. Can Frank and Joe crack the case and save Field Day?

Can Nancy Drew and the Hardy Boys stop the curtain from crashing down on a new Broadway spectacular?The producers of a huge new Broadway musical are worried about their star, a TV actress who has been receiving death threats. When the actress gets sick right before opening night, her understudy has to go on for her—and nearly dies in an “accident” on stage. So the producers call in the Hardy Boys to get to the source of the trouble. Baffled by all the backstage backstabbing, the Hardys call Nancy and ask her to come to New York and help them out. When she arrives, they realize that Nancy is a dead ringer for the lead actress, so they arrange for her to replace the injured understudy. Can the three supersleuths put an end to the accidents plaguing the show? Or is the curtain about to come down once and for all?

ATAC Briefing For Agents Frank and Joe Hardy Mission: Investigate a woman's death and other mysterious events surrounding Uncle Bernie's Fun Park. Location: Uncle Bernie's Fun Park, MA. Potential Victims: All Fun Park patrons. Suspects: Disgruntled employees. Unhappy customers. Enemies of Bernie. This Mission Requires Your Immediate Attention. This Message Will Be Erased In Five Seconds.

A Haunted Maze Has Twice The Dead Ends. Frank and Joe are thrilled to be taking part in the grand opening celebration of a new maze in Cape Breton, Nova Scotia. By solving puzzles -- their specialty -- they could win a valuable prize! But once they arrive, the teens soon have a new puzzle to solve: The owner and designer of the maze, Chezleigh Alan Horton, suddenly disappears. As the boys make their way through a labyrinth of suspects, they face a new twist. Can Frank and Joe unravel a decade-old riddle to save the renowned mazemaster?

Nancy Drew and her friends are going to New Orleans for a vacation -- she even promises not to solve any mysteries while she's down there! But, when she runs into Frank and Joe Hardy, there can't be a mystery too far away. Nancy and the Hardys begin to investigate a crooked real estate scheme admist the glitz and splendor of New Orleans during party season. Throw in a dead body and intrigue, and there's no time for a vacation.

ATAC BRIEFING FOR AGENTS FRANK AND JOE HARDY MISSION: Determine the cause of recent injuries and deaths at a camp for troubled teens. LOCATION: The wilderness surrounding Moosehead Lake in Maine. POTENTIAL VICTIMS: More boys in the program. Counselors. SUSPECTS: We have reason to suspect that the founder of the camp, Linc Saunders, is behind this.

ATAC BRIEFING FOR AGENTS FRAND AND JOE HARDY MISSION: To investigate a string of false hurricane warnings -- and subsequent burglaries -- that are terrorizing the citizens of Bayport. LOCATION: Bayport. POTENTIAL VICTIMS: Anyone who trusts storm warnings from seemingly reliable sources at the peak of Bayport's hurricane season. In other words, about every other person in Bayport. SUSPECTS: We have two suspects at this time... THE MISSION REQUIRES YOUR IMMEDIATE ATTENTION. THIS MESSAGE WILL BE ERASED IN FIVE SECONDS.

ATAC BRIEFING FOR AGENTS FRANK AND JOE HARDY MISSION: To uncover the truth behind a mysterious death at the first qualifying round for Football Frank's Super Bowl hot dog eating contest. LOCATION: The qualifying rounds are in Miami; the final competition takes place during the Super Bowl halftime show. POTENTIAL VICTIMS: All the teen finalists know that the next hot dog could be their last. SUSPECTS: Any of the contestants--they all have reason to knock off the competition. THIS MISSION REQUIRES YOUR IMMEDIATE ATTENTION. THIS MESSAGE WILL BE ERASED IN FIVE SECONDS.

ATAC BRIEFING FOR AGENTS FRANK AND JOE HARDY MISSION: To find the mastermind behind a possible attack at the Big Air Games. LOCATION: Philadelphia, PA. POTENTIAL VICTIMS: Top extreme athletes in the country. Thousands of spectators. SUSPECTS: There may be a group of extremists working together. There may be just one.

Atac Briefing for Agents Frank and Joe Hardy Mission: Investigate and determine the power behind a possibly dangerous Utopian community with potential plans for criminal activity within the oil industry. Location: Between the San Bernadino and San Jacinto Mountains, CA. Potential Victims: Undetermined. Could be thousands of innocents who use oil to generate electricity. Suspects: Arthur Stench, leader of the community. Other members could be involved. This mission requires your immediate attention. This message will be erased in five seconds.

The Hardy brothers avenge a lost friend and fight against time to save the president in this first installment of the Hardy Boys'Casefiles series.When Joe's girlfriend is killed in the blast of a terrorist bomb, Frank and Joe Hardy pursue a ruthless terrorist leader, the infamous Al-Rousasa, who has targeted a presidential candidate for assassination.

Frank and Joe Hardy are determined to bring to justice the vicious criminals who kidnapped their detective father while he was investigation sabotage of a road-building project in the Kentucky wilderness. After Mr. Hardy's escape, the two young sleuths are spurred into action when he mumbles the word “Felix” and they discover a dossier of a notorious ex-convict was stolen from his files. The trail leads them to New York City but ends abruptly in a cemetery! With the new clue of a spiral symbol the boys head to Kentucky as part of a highway construction crew to track down the kidnappers and saboteurs.