Title: Margin of Error

Author: ClawofCat

Timing: AtS, Season 3

Rating: NC-17

Pairing: Fred/Gunn

Warnings: Sexual situations

Summary: Fred discovers the perks of the job when Gunn comes home with a surprise for her after killing a demon.

A/N: For louise39, who gave me the prompts of “science” and “glass.” I’ve never written either Fred or Gunn before, so concrit is welcome. I could have taken the fic in a very dark direction with a prompt like glass, but it’s very light-hearted and sweet. Enjoy!