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Obviously, the ideas of repressed memories and regression therapy were in the air when the writers came up with this episode. The
Enterprise is transporting to Kaldra IV a delegation of Ullians, an alien race of telepathic historians. The Ullians are "archaeologists of the mind" who have been collecting memories of individuals on many worlds to be included in an ambitious library. There are rules that the Ullians must follow in collecting memories, such as never to enter the mind of a person without permission. It's a rule that one of them breaks when he becomes creepily attracted to Counselor Troi. From a distance, at night, he invades a memory she has of one of her romantic entanglements with Commander Riker. He then takes on the role of Riker in her mind and forces himself on her, essentially raping her. Troi falls into a coma. Riker is immediately suspicious of the guy, and soon enough he's in an action flashback and then a coma. Then Dr. Crusher ends up in a coma, too. Meanwhile, there's no proof that the comas are being caused by the Ullians, who have been a peaceful race for generations. When Troi wakes up, the evil Ullian suggests a mind probe, which he does himself, where he plants a false memory. Everything turns out fine, of course, thanks to some investigative research by Geordi and Data. Though the topic may be dated by current standards, the execution is quite good.
--Andy Spletzer
From the Back Cover
The
Enterprise transports a delegation of Ullians, an alien race of telepathic historians, to Kaldra IV. The leader, Tarmin (David Sage), demonstrates his ability to probe a subject's memories, but most of the crew are reluctant to participate.
That night, Tarmin's son, Jev (Ben Lemon), secretly enters Counselor Troi's (Marina Sirtis) mind and the next morning she is found in a coma. While Dr. Crusher (Gates McFadden) searches for the cause, Riker (Jonathan Frakes) questions Jev, but discovers nothing. Later Riker falls into a coma, followed by Dr. Crusher. Picard (Patrick Stewart) suspects the Ullians are responsible, but he has no proof.
When Troi regains consciousness, Jev probes her memory and implicates Tarmin in the attacks. Can the crew discover Jev's treachery before it's too late?