Confession: I've never seen any incarnation of Teen Wolf, and am totally unfamiliar with the story/characters except what you can guess from the title, and honestly it didn't matter. This is very well written and smart. The author did a superb job with the juxtaposed time lines, which created an unexpectedly sophisticated narration--I mean, were you really expecting sophisticated narrative techniques from "Sterek" themed Teen Wolf FF? As other reviewers have noted, it has the added merit of being scaldingly hot, but avoids most of the usual "Alpha" cliches, which is also pretty remarkable when you think about it.
So bottom line: warmly (fanning self) recommend.