1990: TNG S03E18 “Allegiance“. Captain Picard and three other people are abducted and imprisoned by an unknown force, and replaced by duplicates. This episode bears resemblance to the TOS episode “The Empath”. In both stories the Enterprise’s captain is abducted by a pair of aliens as part of an experiment. In the end both Kirk and Picard show their captors the errors of their ways. The TOS Vians even look a good deal like the aliens seen in this TNG episode. WATCH!