I'm re-watching this series.
The first time I watched it, I was hooked after the first episode.
Unfortunately the Hollywood writer's strike hit before they started the second season, so my understanding was at that time, many of the writers didn't return and the second season suffered. I was happy they wrapped it up though, even if it was not as well done as the first season.
In all its a fun ride the second time too.
Additionally, Lenny James was great in this.