Major spoilers for all seasons of Dexter to S4, then VERY AU. Warning, character death!
See earlier chapters for disclaimers etc.
On Twisting the Hellmouth
On Archive of our Own
Give the Boys a Great Big Hand - XVII
Mod note - A bit late now, but any chance of a Crossover: Dexter tag?
Please note For some reason this post was delayed in moderation for MONTHS - there's already another chapter on line. Follow the links to Twisting the Hellmouth or AO3 to see it.