Episode 25: “The Pipeline”

Underground: The Red Pipeline Leads to a Hidden Power. There's No Coming Back.

Somewhere Between Sant Pau and Sarrià — 4:17 PM

The map Mateo left behind wasn’t a route.

It was a code.

Colored pins traced Barcelona like a circulatory system. Red for Raval. Black for Eixample. Green for Sarrià. But it wasn’t geography—it was infrastructure.

Lucía stood over a city works archive in an abandoned office near Plaça de Tetuan. She clicked op…