Stardate 42286.3: Data and Geordi are playing in a Sherlock Holmes simulation on the holodeck. Geordi, however, quits when Data solves a case immediately because he knows the novel, instead of applying logic. Dr. Pulaski challenges Data by creating a new Holmes-type story, but being just a combination of two novels, Data quickly solves this one too. Then Geordi has the computer create an opponent as a match for Data. Unbeknownst to anyone, the computer gives this opponent, Dr. Moriarty, self-awareness as well as access to the holodeck controls, so he would be able to beat Data as requested. Moriarty kidnaps Pulaski and even gets his hands on the Enterprise's attitude control. Geordi prepares a particle beam that would destroy every holographic creation but also Dr. Pulaski. Picard resolves the situation when he explains to Moriarty that he is only a computer program and that he won't be able to leave the holodeck. Before Moriarty is stored, Picard agrees to reactivate him once a method to convert him to a corporeal form is found.

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