WHOSPY - Week 1

Camille Coduri returns as Rose's mum. She's seen something terrible.

The crew work hard to get the most out of the fading light.

When we asked, no one would tell us what this was from.

This man is spraying snow.

The crew add a decorative touch to an entire tower block.

The crew line up a shot.

Who Spy: Season 1 How we covered the first year of filming.