But while he might get you to tear up a time or two, the unique is far more than treatment. Then in the very last episode of Season 5, Giles attempts to invoke The Needs of the Many in generating the situation that it might appear to a stage in which killing Buffy's not-genuinely-sister Dawn is the only way to preserve the environment (failure of which would lead to Dawn's loss of life no matter, as very well as anyone else's). 1,008.