Sherlock tries to determine who has been killing weak and terminal patients at a hospital, making it look like they died of natural causes. Meanwhile, Sherlock learns more about Joan’s decision to walk away from her surgical career.
Elenco:
Jonny Lee Miller
,
Lucy Liu
,
Jon Michael Hill
,
Aidan Quinn
,
John Noble
,
Natalie Dormer
,
Ophelia Lovibond
,
Rhys Ifans
,
Sean Pertwee
.