An excellent Sterek versus the zombies fanfic. Derek and Stiles travel across America on their way back to Beacon Hills fighting 'prowlers' and falling in love.
Art by misslucid
'Derek probably shouldn't let it happen, given some of the thoughts he's had in the mornings recently, but Stiles is like a kitten weaving constantly between Derek's ankles, and just as irresistible. He can't keep his hands off him.'