![The Walk-In](https://image.tmdb.org/t/p/w300/uCXoY5iwnXk5bOPkIpJrS9WkyP0.jpg)
The Walk-In - Season 1 Episode 5
Robbie Mullen's performance on the witness stand will prove to be the key factor in any successful guilty convictions of his former National Action friends.
- Genre: Drama, Crime
- Studio: ITV1
- Keyword: london, england, journalist, based on true story, informant
- Cast: Stephen Graham, Jason Flemyng, Leanne Best, Andrew Ellis, Chris Coghill, Dean-Charles Chapman