As they jogged through the lobby, Percy figured Annabeth would like this place. It was spacious and brightly lit, with big vaulted windows. Books and architecture, that was definitely her.… He froze in his tracks. “Percy?” Frank asked. “What’s wrong?” Percy tried desperately to concentrate. Where had those thoughts come from? Architecture, books…Annabeth had taken him to the library once, back home in—in—The memory faded. Percy slammed his fist into the side of a bookshelf.