An interesting concept proved to be a waste of money.
Unaware at the start, I then, almost immediately, spent almost an hour trying to fend off my knowledge that I was watching a live train crash.
So I turned the dvd off with 45 mins to go, and happily watched one of the "all-great" episodes of Dad's Army.
If I was in a cinema, I would have walked out.
A respectable cast had my absolute sympathy and earned 2 stars for the movie as they valiantly took turns unsuccessfully performing CPR on the film.