Stardate 45122.3: Riker and an away team witness an attack of the Crystalline Entity that wipes out the whole vegetation of Melona IV and kills two people, including Riker's acquaintance Carmen Davila. Dr. Kila Marr, whose son was once killed by the Crystalline Entity when Lore lured it to Omicron Theta, comes aboard the Enterprise. She is very hostile towards Lore's "brother" Data, until she learns that he has the memories of all killed settlers and is even able to imitate her son's voice. The entity also kills the crew of an alien freighter. Picard, however, makes clear that the primary goal is to communicate with the entity. When the Enterprise encounters the Crystalline Entity, Marr takes revenge by destroying it with a graviton pulse that was supposed to be a means of communication.

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