Dame Agatha Christie was a lot of great things, but she wasn't exactly a romantic soul. Maybe because of what she went through in her first marriage, her stories don't feature many examples of true and/or everlasting love. Her most well-known protagonists are a single middle-aged detective and a clever old spinster, and when her stories feature young couples, one of them is often plotting to ingeniously murder the other. That's why I'm wondering if the finale of this TV-episode of "In a Glass Darkly" is also, in fact, the original ending that Mrs. Christie penned down. I haven't read the short story, but the episode has a more or less happy ending. Knowing Agatha Christie and her cynical mind, I'm tempted to assume her original plot really ended with Matthew strangling Sylvia to death.
That being said, everything else leading up to the climax is vintage Agatha Christie! A man with a vision of a ghastly murder, a killer with a scarred face, WWI destroying the lives of young and cheerful adolescents, adultery, and sinister things happening at a remote country estate. The main plot-twist can easily be guessed halfway already (or even before, if you are somewhat familiar with the author's style), but it doesn't ruin the fun at all. Emma Piper is a talented and very charismatic actress, and I'm quite surprised she only has 13 fairly unknown acting-credits on her resume.
That being said, everything else leading up to the climax is vintage Agatha Christie! A man with a vision of a ghastly murder, a killer with a scarred face, WWI destroying the lives of young and cheerful adolescents, adultery, and sinister things happening at a remote country estate. The main plot-twist can easily be guessed halfway already (or even before, if you are somewhat familiar with the author's style), but it doesn't ruin the fun at all. Emma Piper is a talented and very charismatic actress, and I'm quite surprised she only has 13 fairly unknown acting-credits on her resume.