Major Plot Holes in The Thirteenth Guest? Can Anyone Help Me?
***Spoiler warning!***
I have to give away some plot elements in order to ask my questions, hence the above warning. But presumably people on the discussion pages have watched the film already, so spoilers shouldn't be a problem.
It seems to me that the opening of the film is misleading, whether accidentally, because of a plain old screenwriting error, or deliberately, to throw the viewer off. When Ginger Rogers enters the house the first time, her character has a vivid memory of where everyone was sitting. But as we learn later, this person is a fake, and therefore wouldn't have had any such memory. We might suppose that she was "filled in" by the conspirators helping her; but even supposing she was fully coached on the seating arrangements, a fake wouldn't have gone through the sentimental reverie we hear in the voiceover. She would have just sat down and waited for the lawyer (who, she believed, had summoned her there). Am I missing something?
I see the purpose of the reverie, of course -- it is exposition to fill the viewer in on the events of 13 years ago. But that still leaves the inconsistencies I've mentioned.
It's also not clear why the fake would have wanted to be involved in the first place. Surely she wouldn't have agreed to change her face if she thought someone was going to try to bump off anyone who looked like she would then look. So she must have been told something else. What was she told, to induce her to change her face? Was she offered a share of the inheritance? And even supposing that she was, who would have benefited from bringing her in as a player? How would a fake daughter help any of the other living relatives to get hold of the money?
We are told later there were two factions involved, but I wasn't able to line up who was on whose side. Apparently the lawyer and the best friend of the brother were involved in one faction, and the actual murderer was on the other side; but then who invited the purported daughter to the house late at night? Someone who thought she was the real daughter, or someone who knew she was a fake? The fake appears to have expected the lawyer, because she names him when she hears footsteps in the house, which suggests that the lawyer knows about the face change and that he is on her side. But why would the lawyer help a non-family member to fake a family member's identity, then lure her to the house to have her bumped off? Presumably, then, it wasn't the lawyer who invited her, but the real murderer, faking a communication from the lawyer. But even that doesn't make sense. The real murderer was apparently quite willing to bump the fake off (believing her to be real) without even interrogating her about the combination, but later keeps the real daughter alive so she can reveal the combination. And it gets worse. The fake daughter had the combination of the safe on her. If the real murderer knew this, the real murderer could have simply gone upstairs after he electrocuted her, and taken the combination out of her pocket or purse, and he could have absconded with the funds that night, and that would have been the end of the story.
The basic inheritance scheme itself is also implausible. If the father wanted to make sure that the daughter wasn't cheated by the other family members of her inheritance, couldn't he have just willed everything to her -- with the stipulation that if she died before she came of age, all the money would go to charity? Then the other family members would have no motive to bump her off. Or was it that he didn't trust the lawyer to carry out the will? Then fine, he could have gone to a different lawyer of good reputation who had no past connection with the family and had that lawyer draw up the will.
What the movie needed was an Agatha Christie moment at the end, where everything was tied together.
Or am I off-base? Does it all tie together? If anyone can explain the whole scheme, I'd be grateful. I found the movie enjoyable -- it never failed to keep up my interest while I was watching it -- but I'm not sure that everything adds up.