Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: Goodbye to the Fifth Doctor

What can you really say about this? This was Peter Davison's finest hour as the Doctor, and is possibly the best story of the entire series. The plot is somewhat similiar to Phantom of the Opera, but the resemblance is only superficial. The desperate heroics of the Doctor as he tries to save his life and Peri on a machiavellian mining world are almost unmatched in the series. The only real disappointment is that the episode is Davison's last. Probably the high water mark of the series; the show would never be this good again.