1988-12-05 • 46 min
Stardate: 42286.3. Data and Geordi become involved with a holodeck program about Sherlock Holmes and his investigations, when they create Sherlock's arch nemesis, Moriarty; however, modifications to the Moriarty character include the capability of out-smarting Data, which leads to some unexpected consequences.
Daniel Davis
Professor James Moriarty
Majel Barrett
Enterprise Computer (voice) / Lwaxana Troi
Michael Braveheart
Crewman Martinez (uncredited)
Alan Shearman
Inspector Lestrade
Biff Manard
Ruffian
Diz White
Prostitute
Anne Ramsay
Ensign Clancy
Richard Merson
Pie Man
Guy Vardaman
Darien Wallace (uncredited)
Mark Wilson
Holodeck Character