When Gregson learns that a serial slayer he put away 13 years ago may actually be innocent, he faces a career-destroying scandal — unless Sherlock can ultimately prove it was…

After a body is discovered in the woods, the investigation into Cora’s past deepens.

Cora tries to block Ambrose’s continuing investigation, while Mason struggles to come to terms with secrets from Cora’s past.

An unassuming housewife stabs a beachgoer to death, which sparks an investigation and creates confusion in a small town.