Sorry this was SO, SO late, real-life stuff hit me with a vengeance. (Also, as sometimes happens, the story turned out longer than expected.) So:
Title: the Final Cut
Genre: AU, ‘what if?’, with action and character interplay
Rating: PG13 (strong violence)
Characters: Giles, Xander, Ethan
Teaser: A rescue that doesn’t go exactly as planned, with more than a few unexpected lessons learned.