On the morning of my 72nd birthday, a small, plain envelope appeared under my door. Inside, there was no card, no familiar handwriting, just a printed note: Pack warm. Boat leaves Friday at 10:00 a.m. It had to be from Darren. My son hadn’t called me in almost four years. Not for holidays, not for birthdays, not even when a spike in my blood pressure landed me in the emergency room last winter. The coffee in my cup went cold as I stared at the note, a single question echoing in the silence of my kitchen: