Over the next three days, Jake and Dave led a specialist team. They didn't remove the bones—that was for forensic archaeologists. Their job was to re-route the Smestow Brook diversion, to install a modern pumping chamber, and to seal the Victorian vault forever, this time with a memorial plaque.

But at the far end of this lower chamber, there was a machine. A steam engine. A horizontal single-cylinder beam engine, rusted into a tableau of decay. Its flywheel was half-buried in silt. Its brass gauges were cracked but still gleaming in the torchlight. And from its exhaust pipe, that rhythmic water pulsed.

"Jake, you seeing this?" Dave whispered, pointing his helmet camera at the inscription.

The rain over Wolverhampton wasn’t falling that Tuesday afternoon; it was attacking . It hammered the cobbled alleys of the city centre, turned the ring road into a sluggish river, and transformed every forgotten gutter into a temporary waterfall. Inside the cramped, coffee-stained office of , the phone rang with the desperation of a drowning man.

"Whoa," Dave muttered. "That’s not on any map."

The puzzle solved itself in Jake's head. The old Smestow Brook diversion fed this chamber. The steam engine—long dead—had once pumped water up to the canal wharves. But over 170 years, a natural spring had found its way into the lower sump. And the sump had become a trap.