Buffy finally tells her friends about Dawn being the Key.  When everyone starts to acts differently around her, she sneaks with Spike into the Magic Shop and reads Giles' diaries.  When she finds out that she's the Key, she goes to the hospital to see what the mental patients see in her.  One of the Knights of Byzantium is there in the ward and tells her that the Key must be destroyed.  She winds up talking to Ben and tells him about her being the Key.  When he finds out, he turns into Glory who strangely doesn't know what Ben's been told.  When Glory asks Dawn if she's seen the Key, Dawn uses this time to get as much information from Glory about the Key as she can.