In search of two fics actually. In the first, Willow sends a lookalike Spike of some sort to attack Dawn. someone, not certain if it was Willow or Spike was meant to pick Dawn up from a friends house, so Willow sends a lookalike instead. Buffy shows up at the Magic Box and Anya somehow alerts her to the problem. Buffy knows it's not Spike because she already knows who he is.
In the second story, Angel and his group are in Sunnydale. They are helping, I think, find a demon. Connor is there and becomes friendly with Dawn. All I can remember is a scene where Connor gets shot by one of Dawns school mates. I also think the demon is eying to avenge its slayed mate, but maybe not. Any and all help would be appreciated.