And something else.

"Right, Dave," Jake said, pulling on his neoprene gloves. "Fire up the CCTV crawler. We’re going in."

He wrote a report for the company archive. He titled it: "Wolverhampton Royal London Arcade: Unrecorded Victorian Pumping Station and Human Remains. Cause of Blockage: History."

And then he would tell the story of the drain company that went beneath the city and found its own black, ancient heart.