Hardy Boys Clue Book Series

Frank and Joe are on a mission to track down a thief in the first book in an all-new, interactive Hardy Boys chapter book mystery series. Have a piece of paper nearby so you can jot down your own ideas and solutions to the case! Bayport Elementary is throwing a fundraiser so they can go on an end-of-the-year trip. Ellie Freeman’s parents have volunteered their house for the event, and neighbors have donated all sorts of prizes to be raffled off including movie tickets and gift certificates to Fun World. But the best prize of all is a brand-new ZCross50000, a video game system that every kid has been drooling over. But sometime during the event, the ZCross goes missing. Can Frank and Jo figure out who took the prize before it’s too late to save the big school trip?

Detective brothers Frank and Joe try to figure out who’s spoiling the fun on a class trip in the third book in an all-new, interactive Hardy Boys chapter book mystery series. Frank and Joe Hardy are super-psyched for their school trip to Lake Poketoe. Along with their friends, they can’t wait to go tubing, make s’mores, and take nature walks. And Joe is particularly excited to try out his brand-new water skis during the trip! But when the group tries to head out for their first day of boating, Joe discovers his skis are missing! Who could have taken them? And how could they have disappeared without anyone noticing? With time running out on their trip, can Frank and Joe figure out who the sneaky ski thief could be?

Frank and Joe try to hit a home run by figuring out what happened to the Bayport Bandits’ playbook before the first big baseball game in the second book in an all-new, interactive Hardy Boys chapter book mystery series. Includes space for readers to jot down their own ideas and solutions to the case! Frank and Joe and the rest of their Bayport Bandits teammates can’t wait for Little League to start! Everyone is celebrating the beginning of the season at Speedy Zermino’s house. While they’re all together, Coach Quinn shows off the Bandit’s new playbook that contains all of the new strategies and plays that will help them to a winning season. The next day at practice, Coach Quinn realizes the all-important playbook has gone missing! With their teammates counting on them to get the book back, Frank and Joe must take a swing at cracking this case…or their season will be over before it even begins.

Detective brothers Frank and Joe work to debunk a time travel machine in the eighth book in the interactive Hardy Boys Clue Book series. Bayport Elementary is almost ready for the annual science fair—it’s all down to the final touches. Frank and Joe have collaborated on a detective helmet. It’s the perfect lie detector—just place it on a suspect’s head and the bells and whistles will tell you when they’re lying. But not everyone is as prepared for the big fair. Their good friend Phil has designed a time machine he calls the Time Warp Wonder. He just needs to figure out how it works first… Phil uses Chet’s hamster as a test subject. And the machine really does make the hamster disappear from the cafeteria! It’s just that Phil isn’t sure where the hamster went or how to get him back. Frank and Joe are not so sure the hamster went back in time. They have a feeling their Clue Book will be more help to Chet’s hamster than Phil’s calculations. But the brothers start questioning their instincts when they receive pictures of the hamster in different time periods; dressed as caveman with the dinosaurs, suited up in armor in the middle ages, in a top hat watching Abe Lincoln give a speech. Could Chet’s hamster really be traveling though time? It’s up to the Hardy Boys—and you—to find out!

Detective brothers Frank and Joe work to uncover a pirate ghost hoax in the seventh book in the interactive Hardy Boys Clue Book series. The Hardy Boys are super excited when their friend Jason Wang wins the “Talk Like a Pirate Contest” at Bayport’s annual Pirate Palooza. Jason’s prize is a map to the legendary pirate, Captain Scurvydog’s buried treasure. Expert detectives Frank and Joe offer to help him find it. But the next day, Jason tells the brothers that he won’t be doing any treasure hunting. He says the ghost of Captain Scurvydog has been haunting him; his parrot is singing pirate songs he’s never been taught, pirate coins appeared on his windowsill, and there’s a mysterious note in a bottle warning Jason to stay away from buried treasure. To Jason, the message is clear: stay away from Captain Scurvydog’s booty! Frank and Joe don’t believe in ghosts. They’re sure someone is tricking Jason so they can dig up the buried treasure themselves. The only question is, who?

Detective brothers Frank and Joe must solve another intriguing mystery in the fifth book in the interactive Hardy Boys Clue Book series. Frank and Joe are excited for the class trip to Bayport Bear Park. When they arrive, the entire class is greeted with a beautiful sight: a pile of prizes and goodies in the middle of the room! Their guide, Marnie, explains that they will be split into teams to complete a scavenger hunt through the park. Whoever solves the clues the fastest will win all of the prizes. But after they come back from solving the first few clues, the entire pile of prizes has been destroyed, with half of the loot completely missing! Can Frank and Joe figure out who the Treat Thief is and save the trip?

Detective brothers Frank and Joe must solve a muddy mystery in the ninth book in the interactive Hardy Boys Clue Book series. Bayport Elementary is hosting a Mud Run to celebrate spring! A particularly muddy part of the town’s park will be set aside for the race and Coach Lambert has even managed to make more mud by using the park’s hoses and shovels. Frank and Joe can’t wait to splash through the muck. But on the day of the race, the runners are stopped in their tracks by croaking, blurping bullfrogs! Lots of people in the town had been annoyed that the park was being taken over by a bunch of muddy kids. Could someone have sabotaged the race with buckets of frogs?

Detective brothers Frank and Joe must figure out who is sabotaging their school talent show in the fourth book in an all-new, interactive Hardy Boys chapter book mystery series. Frank and Joe Hardy are excited to compete in the annual Bayport Elementary Talent Show. Frank is going to work behind the scenes, and Joe wants to show off his sweet juggling skills. But during the first rehearsal, strange things start to happen—their friend’s trumpet is filled with bubbles, someone’s backing track is switched to croaking frogs, and a strategically placed batch of hair dye gives one of their classmates a bad hair day to remember. Can Frank and Joe figure out how to stop the pranks before the curtain falls early on the show?

Detective brothers Frank and Joe must figure out who sabotaged Skeeter the Skateboarding Cat in the sixth book in the interactive Hardy Boys Clue Book series. Everyone in Bayport is talking about the first annual skateboard contest. The winner gets free mac and cheese balls from The Easy Cheesy food truck for the whole year! Frank and Joe just wish there was someone to beat the school’s biggest bully, and best skateboarder, Diesel Diffendorfer. Then their best friend Chet shows them a video of Skeeter the skateboarding cat…a cat that happens to belong to the new kid in town, Carlos Martinez. Suddenly, a plan is hatched. Carlos agrees to enter Skeeter, in the contest. Who wouldn’t want free mac and cheese for a year? But just when Skeeter hits his final trick, a mouse runs across his path! Distracted, Skeeter hops off his skateboard and chases after his furry foe. When Frank and Joe run to catch him, they discover the mouse was a toy. Could someone have sabotaged Skeeter’s big day? It’s up to the Hardy Boys—and you—to find out!

Detective brothers Frank and Joe search for a very special beetle in the eleventh book in the interactive Hardy Boys Clue Book series. Frank and Joe are taking care of their friend’s super cool pet stag beetle named Izumi for the weekend. Not only is this bug fun to watch, but he is also supposed to bring you luck! The first night with Izumi, Joe learns that stag beetles like to hiss and chirp…a lot. So, Joe decides to leave Izumi on the front stoop so he can get some sleep. But when Joe goes to get Izumi the next morning, he discovers that his lucky friend isn’t so lucky after all. Because Izumi has gone missing! Izumi’s cage is gone so the boys know he didn’t escape on his own. Did Aki’s pet get bug-napped? Can the brothers find this special bug before the weekend is over? It’s up to Frank and Joe—and you—to solve the mystery of the missing beetle!

Detective brothers Frank and Joe fish for clues at the Bayport Aquarium in the twelfth book in the interactive Hardy Boys Clue Book series. Frank and Joe can’t wait for their trip to the Bayport Aquarium. A new tide pool exhibit has just opened where visitors can learn all about horseshoe crabs, rays, jellyfish, and other sea life as they touch and hold the flora and fauna that make up the aquatic ecosystem! But in the middle of the presentation, an aquarium worker realizes that one of the creatures has gone missing from the tank. It can’t survive for long outside the water, and the clock is ticking. Can the Hardy Boys follow the clues and find the culprit before the new exhibit sinks?

Detective brothers Frank and Joe investigate a crime of smashin’ in the tenth book in the interactive Hardy Boys Clue Book series. Frank, Joe, and their best friend Chet are attending Bayport Zoo’s annual Halloween carnival. Frank and Joe have a routine planned for Scaryoke, and Chet has entered the pumpkin pie-eating contest—he even brought his own whipped cream! After their performance, Frank and Joe go to check out the painted pumpkins on display. But when the brothers enter the tent, they see their Scaryoke song wasn’t the only smash hit at the carnival. The floor is littered with bits of pulverized pumpkins! What’s worse, the organizer says that unless the culprits are caught by the end of the day, this will be the last Boo at the Zoo…forever! Can Frank and Joe find out what happened before it’s too late? Or is this pumpkin crime unpatchable?

Detective brothers Frank and Joe search for a saboteur in the fourteenth book in the interactive Hardy Boys Clue Book series. Frank and Joe are excited to be supporting their friends on the Bayport Checkers hockey team. Ever since Frank’s new friend Pete moved to town, the team’s season has turned around. Winning the championship would be the perfect reward for all their hard work. But when someone dumps paint all over the team’s lucky skate just before the game, their star player worries their luck has run out. Then Pete’s stick breaks before he has to take the ice! Has the team really lost their luck or is someone trying to psych them out so they lose the game? Without a clear suspect, Frank and Joe are on thin ice.

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?

Detective brothers Frank and Joe weed out a vandal in the fifteenth book in the interactive Hardy Boys Clue Book series. Frank and Joe Hardy have been hard at work turning their front yard into an eco-friendly edible landscape garden thanks to a contest sponsored by the Bayport Science Center. Frank’s really been enjoying learning about how to make the garden thrive, while Joe likes all of the cool critters and, of course, getting to munch on all of the yummy food. When the prize vegetables being grown in some of the top competitors’ gardens are attacked, at first it looks like hungry pests have been having a feast. But as Frank and Joe unearth more evidence, it appears those cucumbers aren’t being crunched by creatures with a craving. No, the veggies are the target of a clever saboteur. The Hardys will have to figure out who’s been destroying the gardens fast, before their friends’ chances of winning the contest are shredded like lettuce.

Detective brothers Frank and Joe catch a book crook to save their library in the sixteenth book in the interactive Hardy Boys Clue Book series. One of Frank and Joe Hardy’s favorite places to hang out is the Bayport Junior Public Library. Having a library just for kids is the best, and they love the real-life bookworm mascots, a whole farm of them! But the town council is facing budget cuts and will vote soon on whether to shut down the BJPL and combine locations with the adult library. Just when the boys’ librarian is starting to sway the council in her favor, a valuable book goes missing from the Rare Reads Room! The Hardy brothers are determined to find the missing book and save the library. Joe pulls out a rare book of his own—the clue book! There are plenty of suspects, from the councilwoman who’s in favor of folding the junior library to their classmate Jeffrey Le Guin who was temporarily suspended from the library for making too much noise. But the more they investigate, the more they realize that you can’t judge a crook by their cover.