Shakespeare, Agatha Christie, Hercule Poirot, and India meet in this made-for-television adaptation of Christie's One, Two, Buckle my Shoe.
It's hard to write about mysteries because it's too easy to give the game away and spoil it for some future reader or viewer, so I won't say too much about the plot. But near the beginning of the show, we're treated to the end of a production of Much Ado About Nothing put on in India by English actors for an almost-exclusively English audience. As the plot rolls out, the connections between the unmasking in the scene and the unmasking of the guilty party or parties becomes clearer and clearer.
Here's the Shakespeare (which is what you're here for, after all):
Links: The Episode at IMDB.