Charles Stross - Overtime

Introduced to readers in the novels The Atrocity Archive and The Jennifer Morgue, the Laundry is a secret British government agency charged with preventing dark interdimensional entities from destroying the human race. Now, in "Overtime," the Laundry is on a skeleton staff for Christmas — leaving one bureaucrat to be all that stands between the world and annihilation by the Thing That Comes Down Chimneys. Written especially for Tor.com’s holiday season, Charles Stross’s novelette is a finalist for the 2010 Hugo Award. Charles Stross is the Hugo-winning author of some of the most acclaimed novels and stories of the last ten years, including Singularity Sky, Accelerando, Halting State, the "Merchant Princes" series beginning with The Family Trade, and the story collections Toast and Wireless.