An unassuming housewife stabs a beachgoer to death, which sparks an investigation and creates confusion in a small town.
Cora tries to block Ambrose's continuing investigation, while Mason struggles to come to terms with secrets from Cora's past.
Ambrose unearths a startling secret about Cora that changes the course of the investigation; Mason takes matters into his own hands.
With Ambrose's help, Cora struggles to recover missing memories, which lead Ambrose to a new suspect.
When Ambrose begins to waver, Cora convinces him to take a risk for the case.
