Ten thousand engineers and construction workers race to complete Crossrail.
Linda and her team must battle fault lines that threaten the site with flooding, race to build access tunnels to alleviate pressure on a congested construction site, and piece together a giant geometric jigsaw that will form a station entrance.
Engineers must construct and fit out a new station at Paddington, erect a 130m long great glass canopy to soar above the structure, and plug directly into Brunel's original station.