"Something was wrong with Luke," Annabeth muttered, poking at the fire with her knife. "Did you notice the way he was acting?" "He looked pretty pleased to me," I said. "Like he'd spent a nice day torturing heroes." "That's not true! There was something wrong with him. He looked... nervous. He told his monsters to spare me. He wanted to tell me something." "Probably, 'Hi, Annabeth! Sit here with me and watch while I tear your friends apart. It'll be fun!"
"Percy Jackson and the Battle of the Labyrinth". Book by Rick Riordan, May 6, 2008.