“Who are you and what have you done with my wife?” It's the kind of rhetorical question asked in jest, expressing pleasant surprise when someone has a change in behavior or attitude.But what if this wasn’t a rhetorical question? What if someone believed their spouse had actually been replaced by someone else? An imposter. A lookalike. Suddenly “Who are you and what have you done with my wife” takes on a much darker, and more sinister tone.