"Mortal Coil" is the twelfth episode of the fourth season of the American science fiction television series Star Trek: Voyager, the 80th episode overall. The episode originally aired on December 17, 1997 on the UPN network. Directed by Allan Kroeker, it was written by Bryan Fuller, and produced by Kenneth Biller and Joe Menosky.

Set in the 24th century, the series follows the adventures of the Starfleet and Maquis crew of the starship USS Voyager after they were stranded in the Delta Quadrant far from the rest of the Federation. In this episode, it deals with a starring character's death, resurrection, and crisis of faith.

In this episode, written by Bryan Fuller, Neelix is killed while participating in a survey mission of a protomatter nebula. Using a technique devised by Seven of Nine , however, the Doctor is able to revive Neelix after being dead for nearly 19 hours. Distressed that he had not perceived the afterlife while he was dead, Neelix begins to question his religious beliefs. With the aid of Chakotay , Neelix embarks on a spiritual vision quest, during which he confronts his dead sister, Alixia , who mocks him and then dies and crumbles into dust. He then finds himself on a slab, surrounded by visions of his shipmates, who tell him that life is irrelevant and that he knows what he has to do.

...
Wikipedia