It's a matter of personal taste when watching a story of forbidden love as to how it is portrayed. There are many that have gone before "A Promise" that have moved readers and audiences alike. Frankly, it's that old tale of elderly man, young wife, and introduction of handsome contender who falls for the forbidden fruit. As much as I like Alan Rickman, I found this movie to be a slow-moving tale lacking the passion I hoped to encounter. Rebecca Hall is always watchable, though, so her presence alone made up for much of the romantic spark that wasn't quite there. Oh and the production design is aces.