Before I read the novel, it was a collection of Hitchcock stories. It was adapted into the Chinese film "The Strange Tales of the Ancient Mirror", which is divided into three stories, of which you are talking about the second. These three stories are all from Hitchcock's collection of suspense stories. In the movie, these three stories and the opening paragraph are connected by an ancient mirror, reflecting the dangers of the human heart.
You just need to search for the movie "Ancient Mirror" and it will appear. Movie channels also play.