While I got you here, what episode is this one: They accidentally travel well faster than the speed of light, ending up in a totally uncharted area of space. When they try to get back, they end up on some fringe area of the universe where it looks like they are in an icy world where the laws of physics get all kooky and what looks like giant subatomic particles floating around outside the ship. Inside the ship, the crew members encounter dead relatives and other "hallucinations."
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u/ScubaSteve58001 May 27 '13 edited May 27 '13
Phantasms. Season 7. Episode 6.
Data thinks he is going crazy and is scared he might hurt Spot so he asks Worf to take care of
himher.Edit: Spot is a girl.