Oz and Xander as writers as a series of horror books

[ladyhatshepsut.livejournal.com]

I'm really ticked off here. I was sure I had this story, but I've gone through my files with every key word I could think of with zero results.

Story: Several years after leaving Sunnydale, Xander opens his door to find Giles on his doorstep. Giles tells him that he had been hired to edit a series of horror books that seemed strangely familiar. He figured out that the writer was actually Xander and Oz, who are now married and living together with a cat and a dog. In exchange for their address, Giles agreed to pitch them the idea of making the books into movies. They say no, which he knew they would. Xander figures out that Giles is now married to Anya and has a child.

Thanks for any help you could give in finding this runaway story.