On Monday, January 30, 2017, just after 9 PM, a blue hatchback rolls up to a London warehouse. Two men slip out. They carry almost nothing — just rope, some sharp tools, and nerves of steel. They slice through the fence. There's a 40-foot wall and no ladder. They climb a drainpipe. On the roof, they expertly slice the skylight, and rappel down into the dark. All that await them are crates and silence. And $3.5 million worth of centuries old, extremely rare, and very expensive, – not jewels, not art, but books.