Destruction of the USS Enterprise-D (Cause and Effect)

The Enterprise-D is exploring the Typhon Expanse. Riker, Crusher, Worf, and Data are playing cards, where Dr. Crusher calls Riker's bluff and wins the round. Crusher then goes to sickbay to treat Geordi La Forge for dizziness, but feels that she's performed the same procedure before. After she goes to bed, she is haunted by strange voices.

Soon after, the Enterprise loses power as a space-time distortion erupts nearby, and a second Federation ship emerges from it on a collision course with the Enterprise. Attempts to hail the other ship prove unsuccessful; Riker suggests decompressing the main shuttle bay (as the escaping air would hopefully push the Enterprise out of harm's way), but Data suggests using the tractor beam to deflect the oncoming ship, to which Picard agrees. The ship is deflected, but not enough to avoid striking the starboard nacelle. The Enterprise-D has suffered heavy damage to one of its warp nacelles. A warp core breach is unavoidable, and Captain Picard issues the frantic order, "All hands abandon ship! Repeat, all hands abandon..." as the ship explodes.