I always enjoy reading Christmas stories in December. (go figure huh?)Anne Perry is an excellent (and prolific) historical novelist, producing three separate series. My favourite is the Monk series. A Christmas Promise is the 8th Christmas volume she has written.
Set again in Victorian London, it tells the story of Gracie Phipps who befriends a young girl named Minnie just before Christmas. Minnie's uncle has been murdered and his donkey has gone missing. Minnie and Gracie set out to find the donkey and try to piece together who might have killed her uncle.
It's just a slim little volume that won't take you more than a couple of hours to read, but it's a perfect read sitting by your tree with a cup of tea.