"The Haunting of Deck Twelve" - Neelix, in charge of pacifying the Borg children when lights on the ship flicker and fail, lets his imagination run wild and turns reality into a fantastic but utterly believable story which mesmerizes the children into believing that a ghost actually dwells on Deck Twelve.
As Neelix tells it, months ago an electromagnetic lifeform took possession of the ship, shutting down all life support systems, while trying to communicate with Janeway its need to return to the nebula from which it came. Area by area was cordoned off by an invisible force field, and injected with poisonous gas, while the captain set up an emergency command post in the Engineering Room.
Starring Kate Mulgrew as Captain Janeway, Robert Beltran as Chakotay, Roxann Dawson as B'Elanna Torres, Robert Duncan McNeill as Tom Paris, Ethan Phillips as Neelix, Robert Picardo as The Doctor, Tim Russ as Tuvok, Jeri Ryan as Seven of Nine, Garrett Wang as Harry Kim.
Guest Starring Manu Intiraymi as Icheb, Marley McClean as Mezoti, Zoe McLellan as Tal Celes, Kurt Wetherill as Azan, Cody Wetherill as Rebi.
This episode was directed by David Livingston. The story was by Mike Sussman. The teleplay was by Mike Sussman & Kenneth Biller & Bryan Fuller.
TV Guide online synopsis: To keep the ship's youngsters entertained during a nebula blackout, Neelix invents a yarn about a ghost that haunted Voyager.