Holmes plunges into a world of codes and symbols when he investigates a series of murders linked to a mysterious cipher.
Director:
Euros Lyn
Cast:
Benedict Cumberbatch
Martin Freeman
Rupert Graves
Una Stubbs
Loo Brealey
Zoe Telford
Gemma Chan
Al Weaver
Bertie Carvel
Daniel Percival
Paul Chequer
Janice Acquah
Jack Bence
Olivia Poulet
Howard Coggins