Tracker by spikes evilbint
Summary: Captured by the Initiative when he returned to Sunnydale, Spike is forced to become one of the program's best trackers. On a hunt, he encounters a couple of people from his past. What will the consequences of this be?
Tracked Down by spikes evilbint
Summary: Sequel to Tracker. It's been eight years since Spike became a part of the household and Buffy's sons have come to love him and rely on him as much as their mother has. But they find out that the Initiative doesn't let go of their former possessions that easily.
Universal Vampire by Mabel Marsters
Summary: Based end season six with some minor plot changes (see note on chap 1) Story is based around The Initiative
Belonging by DreamsofSpike
Summary: Breaks from canon after Season Four...Five years after the Initiative disaster, the world is a very different place, where society in general knows about demons and vampires, and have found ways to dominate them. Buffy is trapped in an unhappy marriage to a man who doesn't seem to want her, trapped in a world that doesn't seem to need her anymore...can an old ally and enemy, sold into her home as a slave, teach her the meaning of freedom? | 
