What's a holiday without surprises? It's Christmas 1867 at Underbyrne, the Holmes family estate. The house is filled with family, relatives, and three unexpected arrivals-all ready to celebrate the holidays. That is, until another uninvited guest appears: dead in the stables. The discovery marks the beginning of a series of bizarre occurrences: Sherlock's young cousin reports hearing footsteps outside the nursery, Mycroft...