Sherlock Holmes and Dr. Watson find themselves in 1890s London in this holiday special.
Rated PG-13 | Length 90 minutes
Benedict Cumberbatch | Martin Freeman | Una Stubbs | Rupert Graves | Mark Gatiss | Andrew Scott | Louise Brealey | Amanda Abbington | Jonathan Aris | Yasmine Akram | David Nellist | Catherine McCormack | Tim McInnerny | Natasha O'Keeffe | Tim Barlow | Gerald Kyd