Story:
Leap in the Dark Author: nonelvis
Rating: Teen
Word Count: 8183
Author's Summary: The 10th Doctor and Donna crash an unusual party, and discover they aren't the only uninvited guests.
Characters/Pairings: Tenth Doctor, Donna Noble
Warnings: N/A
Recced because: For a fandom that's all about time travel it's strange how rarely it's used in fic. In this Ten and Donna arrive at a party and not only do they find themselves bounced back and forward along the time-line of the party but something big and with claws is hunting.
This fic is brilliantly well written and astonishingly clever. But what really impresses me about it is the interaction between Ten and Donna, given that it was written before Partners in Crime aired it plays beautifully both into what we knew about them from The Runaway Bride and what we've seen in S4 so far.
Oh, and if you need more convincing Donna befriends a robotic skull in a flowerpot called Bernard.