When Amy and Dan get back to the hotel, Nellie is so not happy with them, because she's been stuck at the roach motel (gardon = cockroach). But then they tell her that they were almost killed, and Nellie steps up to their defense, "Nobody messes with my babysitees" (15.18). Oh yeah, it's on like Jean Valjean.
Amy realizes that they have to explore the Catacombs, the intricate series of tunnels under Paris.
Right before they get there, they run into Uncle Alistair, who was last seen stealing the Almanack and leaving the kids in a burning building. He's a real peach, that one.
Nellie whacks him in the head with her backpack.
Amy believes Alistair's excuses. Dan doesn't. Alistair offers to buy them lunch, so they join him.
At lunch, Alistair shows the kids a print of a painting of Ben Franklin. In it, a clue is hidden: "Paris, 1785" (18.96).
Amy acts like this is a big deal, even though they already knew this information.
After lunch, Alistair offers to tell them information about their parents. It seems there are secrets surrounding them and their deaths.
But before he can spill the beans, the Kabra siblings show up. To get Amy and Dan to trust him, Alistair offers to stay behind and delay them.