He thought his message would break me. Instead, it triggered a chain of events he never saw coming.

I had fallen asleep on the couch again, which had been happening more often lately in ways I had not examined closely. Ethan was in Las Vegas for a work conference, the third in six months, and without him the house settled into a particular kind of stillness that I told myself I would miss when he got back. I was already composing the small domestic pleasures of reunion in my half-dreaming mind: coffee made for two, the sound of his key in the lock, the ordinary architecture of a life that seemed, from the inside, solid.

I was thirty-four. I had been married for six years to a man I had met at a networking event when I was twenty-seven and he was the kind of person who knew everyone in the room and seemed to find this natural. I worked in project management for a regional construction firm, a job that required a specific temperament: methodical, unflappable, comfortable in the gap between what a plan says will happen and what actually happens. I was good at it. I was good at most things that required tracking multiple variables and adjusting without panic when one of them changed.