This season is also about the hard truth that there are some enemies it is impossible to fight. Even being around Buffy and Dawn is dangerous for their friends, as Glory and her minions proceed by a process of elimination. The eventual confrontation, when it comes, is genuinely shocking. Meanwhile, the vampire Spike's obsessed desire for Buffy takes them both to some very strange places and Willow and Tara have their love tested in the most gruelling of ways. And in the quietly upsetting episode "The Body", the cast produce their most impressive performances yet as they have to deal with another enemy they cannot fight. --Roz Kaveney