(Just when I'm starting to feel better, my 10-year-old son has a 103 temp and tested positive for the flu!)
So when I did my massive Team Snitch fic rec post, The Fourth Deathly Hallow by Gingertart had not yet been posted to the Games. I hate to say any particular entry is my favorite, but this one is definitely in my top five. It has the perfect mix of plot and characters and imagination and sexual tension and - I could go on and on. I may be biased, not because it's a fic on my team but because I love Sherlock Holmes.
It's a long one (56k words) but it didn't seem that way at all. The merging of the two worlds is cleverly done, and the twist at the end - I should have been expecting but didn't. Just look at the summary as an example of what to expect:
Summary: From the private journal of John. H. Watson MD; not intended for publication. Being an account of the strange case of the Fourth Deathly Hallow; in which Dr John H. Watson and Mr Sherlock Holmes save a life, discover the true secret of Professor Moriarty, unravel a time loop or two, encounter a femme fatale, imbibe potions, break into and out of a wizarding mansion, hide in a male brothel, go shopping, track down a magical artefact, almost attend a ritual sacrifice, fail to be Obliviated and totally ignore the International Statute of Wizarding Secrecy of 1692, all in the company of a lank-haired, irascible but secretly besotted schoolmaster, a bemused aristocrat and an increasingly perceptive and enamoured young hero.
It's truly an incredible and fun story.