Stranger to the Sun (Angel)

When Wesley opens a package that arrives at Angel Investigations by special delivery, he immediately falls into a coma. It's clear he's fallen victim to some kind of magic spell, and Angel sets off with Gunn to find out who or what could be behind the attack. No easy task, since it turns out that everyone who could possibly help them -- from magic-shop owners to the LAPD -- has been affected by the same supernatural slumber. Meanwhile, Cordelia uncovers a Vampire plot to plunge the Earth into constant darkness, so that the creatures of the night can assert their power without the fear of daylight. It's up to her to help prevent it...but she's alone with the still-unconscious Wesley, and as she tends him it becomes increasingly clear that he is in the throes of a terrifying nightmare. Unless she can rouse him it may be the end -- for him as well as the rest of humankind.