I was hoping when I bought this dvd to be buying a good documentary based on the true facts about enigma. Whilst the film work itself was good, the commentary is lacking. The commentator (whether by his own choosing or under direction) tries too hard and ends up being completely over the top. It's a shame as a lot of the things he is saying is quite interesting but after twenty minutes I could no longer watch the rest of the program as I found his "vampires of the sea" and other metaphors completely over the top. He's like someone trying reading the obituary page in an exciting way, I found it completely inappropriate.