The next day, sobered up, Luke broke his routine. Instead of heading to work, he spent the morning making phone calls in his room.

At lunch, he said he was meeting friends and headed out. I didn't interfere, just asked him to come home early.

"Your mom left you in my care. As your elder, I can't let you drink like this every night."

Luke stormed out without a word, slamming the door behind him.

When he finally came home at eleven, I was ...