The EMH finds himself alone on the ship — or does he? The EMH is told he’s really Dr. Lewis Zimmerman — or is he? Dwight Schultz shows up as Barclay — but is it really him? The answers to these questions and more as the Star Trek: Voyager Rewatch makes some “Projections.”
On the one hand, this episode is a less surreal redo of TNG‘s “Frame of Mind,” also a Brannon Braga script (and one that heavily featured Jonathan Frakes, who directed this one). It takes a much more linear approach to the main character’s breakdown, but given that the main character is a computer program, this makes sense.
And the main reason why it works despite its derivative nature is the same reason why every episode that focuses on the EMH works, to wit, the superlative work by Robert Picardo in the role.