Official website: http://www.bbc.co.uk/programmes/b00t4pgh
Benedict Cumberbatch
Sherlock Holmes
Martin Freeman
Dr. John Watson
Una Stubbs
Mrs. Hudson
Rupert Graves
DI Lestrade
Mark Gatiss
Mycroft Holmes
Andrew Scott
Professor Moriarty
Louise Brealey
Molly Hooper
Amanda Abbington
Mary Watson
Jonathan Aris
Anderson
Yasmine Akram
Janine Donlevy