We've just seen a preview of this documentary at work. I can't recommend strongly enough that you watch it when it airs. It's not pleasant viewing, but it's — quite something.

Two hour-long episodes; we saw what will probably be the first to go out. It seems to be slated to go out on BBC Three in late October, though that's not yet final.

It's cases like the ones in this film that make me want to be a policeman.