Continuity mistake: When going through the Up and At 'Em Machine, Kat is splattered with toothpaste. It remains on her face until the blow-dryer segment, and it's suddenly gone.
Continuity mistake: While Dr Harvey is fighting the trio his pants are cut off, seconds later he comes out of the closet and his pants are fine.
Other mistake: When Kat chooses her bedroom in the mansion the bed should be covered in dust but it's not.
Continuity mistake: Before Carrigan and Dibs get in the mansion for first time he's soaked by the rain but seconds later he is dry.
Answer: When Carrigan tosses the Whipstaff documents into the fireplace, one paper's hidden message appears on the back from the heat (if using lemon juice instead of ink, messages stay hidden and only appear when heated); it has a drawn map and handwritten "Buccaneers and buried gold, Whipstaff doth a treasure hold." Later, Casper tells Kat that he and his dad had great fun together playing pirates down in the lab, and Casper quotes the words from their hidden "pirate" message. So the handwritten note with map was actually part of their father/son beloved pirate-playing shared fun (note when the living Casper appears at Kat's party, he wears a piratey costume with a sword at his side). The pirate "treasure chest" contents were merely Casper's personal treasure: his glove and cherished autographed baseball, and it was kept in the lab's vault; even after Casper succumbed to pneumonia, Mr. McFadden kept it in the vault.
Super Grover ★