When Joan revisits one of Sherlock’s cold cases, she discovers an unsolved murder is connected to a rare prehistoric fossil. Meanwhile, Sherlock finds himself in uncharted territory when his duties as a sobriety sponsor cross his personal boundaries.
Elenco:
Jonny Lee Miller
,
Lucy Liu
,
Jon Michael Hill
,
Aidan Quinn
,
John Noble
,
Natalie Dormer
,
Ophelia Lovibond
,
Rhys Ifans
,
Sean Pertwee
.
