Sherlock Holmes (1984)

S2E6 The Final Problem

When the Mona Lisa vanishes from the Louvre, the French authorities enlist the help of Sherlock Holmes. Quickly deducing that he is up against a brilliant adversary, Holmes realizes it is none other than his arch-nemesis, Professor Moriarty. Determined to thwart Moriarty's scheme to sell the priceless painting, Holmes follows him to Switzerland. The tension escalates as the two rivals confront each other in a deadly showdown at the iconic Reichenbach Falls, leading to a climactic battle where only one will emerge victorious.