The Enterprise gets trapped in a Tyken's Rift, an energy-absorbing rupture in space, where all but Data, Troi and Guinan experience rising hallucinations and paranoia.
Did You Know?
The Federation science vessel found by the Enterprise carries the name USS Brittain on the hull (which is backed by all spoken pronunciations), but its name on all internal bridge displays and the captains log when it is replayed has its name spelt Brattain. See more
Captain Jean-Luc Picard
It's a terrifying prospect to lose control of one's mind.
Star Trek: The Next Generation Main Title
Composed by Jerry Goldsmith
and Alexander Courage See more