I kept finding empty beds in a house that wasn't mine

I'm going room to room in a house I've never seen, and every bed is made but empty — sheets tucked tight, hospital corners. There's a kettle boiling somewhere but I can't find the kitchen. I keep thinking someone's about to tell me who was supposed to be in these beds, and then my pager goes off and I'm awake, and for a second the dark in my own bedroom feels like a room I haven't checked yet.