Detective brothers Frank and Joe stop a splash pad saboteur in the seventeenth book in the interactive Hardy Boys Clue Book series. Frank and Joe are looking for ways to beat the heat on their summer vacation, so they’re super excited about the opening of Bayport’s new Splash and Dash Pad. But on their second visit, they find that the fountains are overrun with bubbles! The park director announces that the pad will stay closed until he finds the culprit who poured soap down the drains, so the boys pull out their clue book to search for the Bayport Bubbler. Were the kids who wanted a bike ramp instead of a splash pad trying to ruin the opening? Or perhaps this is a publicity stunt to promote Lucy Lafferty’s new bubble lemonade. The suspects are piling up higher than the bubbles, but if anyone can find the sudsy saboteur, it’s the Hardy brothers!

Detective brothers Frank and Joe investigate garden sabotage.

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?

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?

It's 1969, and the eyes of the whole world are focused on the moon, where the Apollo 11 mission is about to make one giant leap for mousekind. But the time-traveling Pirate Cats are on the scene and they want to sabotage this historic moment with their most audacious and harebrained plan ever. To stop them, Geronimo and his cousin Trap will have to get to the moon first. Fasten your seat belts: a rat-tastic space race is underway!

Katie Firestone, champion kayaker and owner of a whale-watching tour boat, has invited George, along with Nancy, Ned, and Bess, to vacation north of San Francisco in Seabreak. But when Katie’s boat is vandalized, suspicion falls on fisherman Holt Scotto, who may be trying to run Katie out of business. The menace doesn’t stop there: a bike accident, a stalker, danger at an abandoned lighthouse, and a terrifying kayak trip lead Nancy to a hidden sea cave. Inside, Nancy discovers a dangerous secret. Soon her fearless instincts plunge her deeper into trouble—and it will take all her courage, daring, and wits to get herself and her friends out of it alive!