Episode 83 of "Buffy, the Vampire Slayer"
s05e05 No Place Like Home
Title: No Place Like Home
Original Air Date: 10/24/2000 on WB
Director: David Solomon
Writer: Douglas Petrie
Guest Stars: James Wellington (Night Watchman), Paul Hayes (Older Night Watchman), Staci Lawrence (Customer), John Sarkisian (Old Monk)
Plot Outline:
Buffy's mother continues to be sick and the doctors can't figure out why. Buffy finds a strange orb while on patrol and later the security guard who pointed it out to her shows up in the hospital apparently crazy. Buffy suspects that there's a supernatural reason behind her mother's illness and goes into a spell-induced trance provided by Willow which reveals Dawn fading in and out of reality.