I’ll leave you guys to get acquainted. Somebody show Leo to dinner when it’s time?” “I got it,” one of the girls said. Nyssa, Leo remembered. She wore camo pants, a tank top that showed off her buff arms, and a red bandanna over her mop of dark hair. Except for the smiley-face Band-Aid on her chin, she looked like one of those female action heroes, like any second she was going to grab a machine gun and start mowing down evil aliens. “Cool,” Leo said. “I always wanted a sister who could beat me up.

I wanted to keep things as normal as possible for the trainees, so I led my usual morning class. I called it Magic Problem-Solving 101. The trainees called it Whatever Works.

Percy tried to remember. He really did. For some reason, Annabeth and he had visited a spa and decided to destroy it. He couldn't imagine why. Maybe they hadn't like the deep-tissue massage? Maybe they'd gotten bad manicures?

They had a silent staring contest, but Percy didn’t back down. When he and Annabeth started dating, his mother had drummed it into his head: It’s good manners to walk your date to the door. If that was true, it had to be good manners to walk her to the start of her epic solo death quest.

The entrance to the Underworld is in Los Angeles.

It isn’t easy being a brilliant inventor, always alone. Always misunderstood. Easy to turn bitter, make horrible mistakes. People are more difficult to work with than machines. And when you break a person, he can’t be fixed. -Hephaestus

A real man's weapon is his mind.