Later, with the development of the plot, the plot has always led us to think that Emily has a mental problem, until the end, everything is revealed!
Charlie is actually David! He holds a grudge against his wife for cheating on his wife, which breeds the wrong idea of distrusting women and thinking they should be damned, which is why he killed his wife and Elizabeth, Emily and David and When Elizabeth was eating, Emily kept saying: Charlie doesn't like Dad, which actually expresses David's escape from the fact that he is Charlie, and he doesn't want to admit that he killed his wife.
In the end, as mentioned above, David is a very possessive, inferior, and extreme person. Can poor Emily stay in the ward in the end?
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