Sliders

Season 2, Episode 3

Episode Title: Gillian of the Spirits

Air Date: 1996-03-15

Overview:

A lightning bolt strikes the vortex during a slide, damaging the timer and trapping Quinn on the astral plane. Now the Sliders are stranded on a world with 1950s technology and Quinn can not be seen by the others. He tries to get the help from the only one who can see or hear him, a girl that has a history of hearing voices.