I can't remember much

I always thought it had Micheal Caine in it! The only remarkable thing I remember about it is that my wife (then girlfriend) and I went to see it in the very same cinema that one of the scenes was filmed in. We sat in the two seats directly in front of the two characters in the film - the cinema was nearly empty and it was quite strange looking at the same scene on the screen! The cinema was the since closed Torbay Picture House in Paignton (Devon, England) - see wikipedia. I was reminded today about it, but having read the comments I think I'll wait until I see it dirt cheap before buying it.
I believe that one of the characters was actually seated in Agatha Christies favourite seat (she lived nearby) and based most of her cinema 'scenes' with that cinema in mind, one of my reasons in wanting to watch it again.