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Stardate 42286.3 While en route to rendezvous with the USS Victory, and with a bit of time to kill, Data and Geordi enter the holodeck. Slipping into their respective guises of Sherlock Holmes and Doctor John Watson, the two begin one of the adventures of the Sherlock Holmes novels. However, since Data knows all of Sir Arthur Conan Doyle's works on Sherlock Holmes, Geordi has the holodeck computer create a new challenge for Data, and not Sherlock Holmes. This leads to a holodeck creation that threatens the entire ship. Can their new holodeck Moriarty be defeated?
*Captain's Log, Stardate 42286.3. We have arrived on station at coordinates 3629 by 584 three days early for our rendezvous with the USS Victory. There is nothing to do now but hold this position and wait.
Geordi must be looking at the picture of the Enterprise, which Moriarty drew, upside down. He flips it over to show it right side up to Data.
Despite the fact that the computer has a female voice, that of Majel Barrett, Moriarty dubs it "Mr. Computer."
After Geordi tells the Captain that he programmed the holodeck computer for an opponent that could defeat Data, Picard says the word 'merde', which is a vulgar term in French. The way Picard says the word defines its meaning. Merde, the way that Picard says it, would mean 'crap'.