On Sunday night after the girls had gone to bed I was sitting on the sofa and Brian was shaving in the bathroom. He came out and said, "Did you bring the sewing machine down here?"
"No," I said.
"I just heard the sewing machine running."
"No you didn't."
"Yes, I did. It sounded just like it does when you're up there sewing."
So I made him go upstairs to check things out because, yeah, I'm still afraid of the dark. Sure enough, the thread in the needleplate was all tangled up and there was an error code on the machine as if someone had been sewing.