ST:TNG:114 - "Conundrum" (Stardate: 45494.2) - this is the 14th episode of the 5th season of Star Trek: The Next Generation.
After an unidentified alien ship scans the Enterprise, all aboard lose their memories, only knowing that they can pilot the ship. Also, a Commander Keiran MacDuff suddenly appears (he is not part of the actual crew).
This is a great suspense episode, trying to piece together what's happened. It's nice to be the audience member, watching the crew with amnesia trying to figure out who is who and in what position. And Worf thinks he is the captain! Michelle Forbes also returns as Ensign Ro Laren (who with her memory lapse romantically gets involved with a memory lapsed Riker!). And, Data thinks he's the bartender!
Trivia note: Worf notes that the Enterprise has 10 phaser banks, 250 torpedoes - so it's logical for him to deduce that the Enterprise is a warship!
After an unidentified alien ship scans the Enterprise, all aboard lose their memories, only knowing that they can pilot the ship. Also, a Commander Keiran MacDuff suddenly appears (he is not part of the actual crew).
This is a great suspense episode, trying to piece together what's happened. It's nice to be the audience member, watching the crew with amnesia trying to figure out who is who and in what position. And Worf thinks he is the captain! Michelle Forbes also returns as Ensign Ro Laren (who with her memory lapse romantically gets involved with a memory lapsed Riker!). And, Data thinks he's the bartender!
Trivia note: Worf notes that the Enterprise has 10 phaser banks, 250 torpedoes - so it's logical for him to deduce that the Enterprise is a warship!