That night, Elena decided to stay late. She measured the gap. Exactly 12.7 centimeters across. Not a standard size. She mixed a batch of lime mortar and pressed in a fresh terracotta blank, carved to match the geometric pattern of a starflower.

She turned. The new tile was spinning. Slowly at first, then faster, like a compass needle searching for north. Then it stopped—rotated exactly 23 degrees from its original alignment.

When she was called to the Villa Orchidea, the owner, Signor Rinaldi, pointed to a gap in the kitchen floor. "It's been like this for fifty years. Every tile we lay here… moves ."

At midnight, she heard it: a soft click .

"Have you tried cutting a new tile to fit?" she asked.

She pulled out a notebook from her coat. Inside was a charcoal rubbing she’d taken from the tile on the opposite side of the kitchen. That tile had a faint engraving: a tiny arrow, almost invisible, pointing toward the gap.

The next morning, Signor Rinaldi found her drinking coffee in the kitchen. The floor was silent. The tile hadn’t moved.

"Six times," Rinaldi sighed. "Each new tile cracks within a week. Or it slides half an inch overnight. The workmen call it la matta —the wild tile."