Data is sent to follow a probe that has drifted off course and crashed on a primitive planet, only to crash on the planet, himself, with no memory of any event prior to crashing on the planet's surface.



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Episode cast overview:
Kimberly Cullum ...
Skoran (as Michael G. Hagerty)
Apprentice (as Andy Kossin)
Rainer (as Richard Ortega-Miro)


During a mission to repair a probe which crashed on a planet with a Renaissance culture, an explosion damages Data bad enough to cause amnesia. He is taken in by villager Garvin and his arrogant wife, a teacher who puts him in her class. Before she's convinced of Data's scientific superiority by experiments, the nuclear material he carried has caused radiation sickness. Meanwhile Deanna decides to take her bridge officer exams, supervised by Riker, but keeps failing the engineering emergency test- or is it really something else? Written by KGF Vissers

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Release Date:

12 February 1994 (USA)  »

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Sound Mix:


Aspect Ratio:

1.33 : 1
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Did You Know?


Worf and Geordi only appear as holograms in this episode. See more »


When Data puts down the anvil, it keeps rocking on the uneven ground for a short while, showing that the anvil is in fact very light. See more »


[Riker is "talking" to Troi on his trombone]
Counselor Deanna Troi: You know, this is a much better way of communicating for you. It's far less confusing than the way you normally speak.
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References Star Trek II: The Wrath of Khan (1982) See more »


Star Trek: The Next Generation Main Title
Composed by Jerry Goldsmith and Alexander Courage
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User Reviews

Data Lost
13 October 2014 | by (United States) – See all my reviews

Something has happened to Data as he appears, with a sort of unexplained amnesia, in a pre-industrial culture that bears a resemblance to a medieval village. His appearance makes him the target of superstitious residents but endears him to a kind man and his daughter. Unfortunately, as he entered the town, he cluelessly hands over a case that contains radioactive metals. People begin to get sick and Data is blamed. He begins to work on a cure because while he can't get all his memory back, he seems to have maintained his scientific knowledge. He comes to realize that he is the true cause of the sickness and associates it with the metals he has given for a small price to a metalworker. One the Enterprise, Deanna has begun to feel she has reached a dead end and begins to study to move up to Commander in rank. Apparently, it doesn't take much to attend the bridge in a position of authority. This subplot aside, I find this a really well thought out piece of science fiction.

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