This is weird - I've just started watching this. I had recorded it and been looking forward to it as I enjoyed the first series.
But after only after 5 minutes I thought I had seen it before and having given it another 10 minutes I was sure of it.
Has it been shown anywhere else apart from BBC4 ?
The good news is that Series 3, with 8 epiodes, will be launched on US television on 6 February next year, so (as it will eventually reach the UK) you've still got something to look forward to ;-)
I thought the same thing! I persevered though and going through my brain realised it was from an episode of NCIS or something similar! I watch so many american shows I can't be sure.