Starfleet engineer Lt. Kosinski and his alien assistant throw the Enterprise 2,700,000 light years to a bizarre galaxy where thoughts become reality.

Eric Menyuk (The Traveler)
Stanley Kamel (Lt. j.g. Stanley Kosinski)
Biff Yeager (Lt. Commander Argyle, Chief Engineer)
Herta Ware (Maman Picard)

• Wesley is given a field promotion to Acting Ensign.
  
• Lt. Cmdr. Argyle is the first season's longest-running chief engineer.
  
• This episode was nominated for an Emmy award for Outstanding Sound Mixing in a Drama Series.
  
• The Traveler reappears in the 4th season's "Remember Me".
  
• Eric Menyuk was the runner up for the role of Data.