It's a while before Faith appears but it's a fabulous epic
Origins by Niamh Rated: NC-17 [Reviews - 611]
Summary: Post Season 5, veers from Canon, but uses elements that were seemingly left discarded by the writers. Winner Round 11 Sexiest Bite and Judge's Choice Award at Vampire's Kiss Awards; Winner Round 5: Best Spike Hero story at Lost in Spike Awards; Winner at Love's Last Glimpse Awards Round 8 for Best Spike Characterization. Another set of nominations! Thanks! Nominee, Round 6, Lost in Spike Awards for Best Long Story, Best Love Story and Best Written
http://spikeluver.com/SpuffyRealm/viewstory.php?sid=6300&warning=NC-17