"No funny stuff and I'll get you home before midnight. Promise."But promises don't mean anything. Not to Jo. She's seen promises broken over and over again, not because people meant malice. Because they didn't care. So Jo's devoted her life to teaching people how to care. Sometimes her lessons sink in. Sometimes they don't. Sometimes Jo goes a little one-on-one in order to teach a student that one lesson they'll never, ever forget.