"Collective evil"

The Phoenix crew welcomed aboard a consultant doctor from the Romulan Republic – a specialist in Liberated Borg who had arrived to tend to the captain who had been wounded. Doctor Nemi turned out to be a fraud, only here to try to entice the former-Borg to join some sort of ‘new collective’ where they would be revered and regarded as better than all standard life-forms. Growing hostile when the crew became suspicious of her intent, the doctor then altered the nanites in the captain’s bloodstream so that they could be detonated, effectively taking the woman hostage. Confronted by the rest of the crew, Nemi was forced to defuse the nanites but then managed to flee, remaining un-caught by Starfleet Security.