“Dan was thrilled that the second clue had been safely smuggled out of the church in his pants."So, really, I saved the day," he decided."Wait a minute," Amy said, "I climbed onto the roof in the middle of a thunderstorm.""Yeah, but the clue was in my pants.”

“Bes had indeed put on his ugly outfit. He climbed onto the roof of the limbo and stood there, legs planted, arms akimbo, like superman-exept with only the underwear.I wasn't sure what to say except: "Put some clothes on!""These children are under my protection," Bes insisted."I don't know you," I said, "I never met you before today.""Nonsense. You expressly asked for my attention.""I didn't ask for the Speedo Patrol!”

“She led the way. Eyeless sockets of the dead seemed to stare at them as they passed. "These are cool," Dan decided. "Maybe I could-""No, Dan," Amy said. "You can't collect human bones.""Awww.”

“I want a room decorated with bones!" Dan said. "Where'd they come from?""Cemeteries," Amy said. "Back in the 1700s, the cemeteries were getting overcrowded, so they decided to dig up tons of old bodies–all their bones–and move them into the Catacombs. The thing is...look at the dates. See when they started moving bones into the Catacombs?"Dan squinted at the screen. He didn't see what she was talking about. "Is it my birthday?”

“No!" Amy said. "Dan, you're lucky it was only concussive. You could've wiped out the whole Holt family.""And that would've been bad because...?”

“Whoa," said Nico as he climbed off the bus. "Is that a climbing wall?""Yeah," I (Percy) said."Why is there lava pouring down it?""Little extra challenge..." - Percy”

“I've got a few ideas," (Amy) admitted. "But I don't know where we're going in the long term. I mean - have you ever thought about what this ultimate treasure could be?""Something cool." (Dan)"Oh, that's real helpful. I mean, what could make somebody the most powerful Cahill in history? And why thirty-nine clues?"Dan shrugged. "Thirty-nine is a sweet number. It's thirteen times three. It's also the sum of five prime numbers in a row - 3,5,7,11,13. And if you add the first three powers of three, 3 to the first, 3 to the second, and s to the third, you get thirty-nine."Amy stared at him. "How did you know that?""What do you mean? It's obvious.”