Well, there were so many wonderful fics popping up all over the place that I was completely unsure what to rec, but then I was recently reminded of an old favorite and so that's what I'm going to rec tonight. ::nods::
Power of Persuasionby
janedavitt and
wesleysgirlGiles/Ethan, FRAO
I love this fic because the characterization is so wonderful and well done. Plus, not only does it have plot, but the plot is intriguing and twisty and fun. It's well written and long and a very satisfying read!