I'm a sucker for the classic Agatha Christie plot, so I always love it when someone tries to use it in my fandoms.
The sentence structure doesn't really bother me, but that could be due to my eye being blind to such things. I somehow automatically don't pay attention to things like that if the story is in a foreign language.
Any idea who the murderer is? The idea that it probably is one of the guests really intrigues me.