Star Trek: The Next Generation (1987)

S2E3 Elementary, Dear Data

Stardate 42286.3. Data and Geordi immerse themselves in a holodeck simulation featuring the legendary detective Sherlock Holmes and his thrilling cases. In their pursuit of realism, they inadvertently enhance the character of Moriarty, giving him the ability to outwit Data. This unexpected twist sets off a chain of events, challenging both Data's logic and the safety of the crew, as Moriarty's cunning intelligence poses a genuine threat.