This gentleman couldn't figure out why food was going missing in his high-storey NYC apartment. His girlfriend denied taking it. So he set up a hidden camera to see what was happening, and shortly thereafter, he saw a strange woman creep out of a deep storage crawlspace over the kitchen, let herself down onto the kitchen table and help herself to his pantry. He phoned the police (he was in the apartment), and they told him after investigating that they believed the woman had been secretly living in his apartment for weeks.
I write books. My latest is a YA science fiction novel called Homeland (it's the sequel to Little Brother). More books: Rapture of the Nerds (a novel, with Charlie Stross); With a Little Help (short stories); and The Great Big Beautiful Tomorrow (novella and nonfic). I speak all over the place and I tweet and tumble, too.