Doppelganger topic features have always provided much suspense, have always grabbed you, stuck your attention to details, each move, each dialogue. This one is not widely known, it is not an Alfred Hitchcock's film either, but it is enough to be a little gem to discover again, at all costs. The director is totally unknown to me, so are the actors and the Puerto Rico settings are also unusual. It is a performance to shoot such a story, where an actor plays two characters, especially because of the confusion elements that may provoke this scheme for the audience. And above all, it is not long, it is not two hours length, so you can't get bored. Good little gem.