These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
YMMV: The Mousetrap
Alternate Character Interpretation: Mr. Paravicini sometimes gets this in various productions. Most portray him as a stereotypical Italian who talks a like a this and such. Others however portray him more like an Italian mobster giving him an edge of sorts.
Adaptation Displacement: To some degree, anyhow. Think about it: how often do you hear anyone refer to the original short story or radio play Three Blind Mice instead of the play?
Although that's partially due to publishing of the short story being banned in its home country until the show stops running. It was, however, released in the United States.
A collection of Christie plays has been released in the US, including The Mousetrap. This troper doesn't know if it's been released in the UK as well, but assumes not.
Freud Was Right: Many viewers think that Christopher Wren is supposed to be gay, based on his mannerisms and finding Sgt. Trotter to be attractive (as a policeman), "terribly hearty", etc. Officially, he's not.