Splash Pad Sabotage (Hardy Boys Clue Book #17)

It's summer, so Frank and Joe are hanging out in Bayport, with their friend Chet. They Chet's sister Iola walking dogs, Lucy selling tapioca lemonade, and local bullies Adam, Seth, and Tony terrorizing the area with their skateboarding. The Hardys are excited about the new splash pad, and arrive early for the grand opening. Unfortunately, Adam and his gang ride in the middle of the ceremony because they are angry that the community put in the splash pad instead of a skate park. When the splash pad is filled with soap bubbles, our intrepid investigators set out to find out who would sabotage the brand new community area. They check up on Phil, who is going to a space camp and has a nonpopable bubble recipe in the works as his project. Their friend Chet is suspect because he doesn't want to leave his house. Could Lucy have had a hand in the soapy scourge, or is she too busy selling her bubble lemonade recipe? Adam's skateboarding gang seems the likeliest candidates, but some clever sleuthing discovers that their tire tracks are different from the ones found at the scene of the crime. When Frank and Joe finally root out Chet, they find he has accidentally washed his hair with Puppy Poo, which is shampoo meant for dogs, and it's so goofy he's ashamed to go out. What do Chet and Iola have to do with the Puppy Poo bottles found near the scene of the crime? A page at the end of the book gives young sleuths a moment to reflect on the clues before letting us know the answer.