“It was just a puzzle, Gregor, not what really happened,” said Lizzie. “In the puzzle the rat ate the cheese.” “How did you know that? Did you just guess?” asked Gregor. “No, it was just the only answer left. He said the mouse didn’t eat the cheese. And the two animals who ate mushrooms and cookies weren’t mammals, so that means the spider and the cockroach didn’t eat the cheese. And cheese wasn’t one of the favorite foods of the Overlander, the Underlander, or the bat. So, that only leaves the rat. See?” said Lizzie.

