Recently widowed DC Ember Manning suspects there’s a predator targeting underage girls. She finds herself reflecting on the age difference between herself and her late husband.

Reeling from her discovery about the past, Ember offers to help Riz investigate the Amy Knightly case in the hope of finding out what Riz knows.

Reeling from the discovery of a body in the lake, Ember wrestles with the emerging truth about Mack. As the walls close in on her, Ember reaches breaking point.

Determined to protect Hannah, Ember must face up to the truth that she may have been married to a murderer. Will Ember finally uncover the truth of what happened to Amy?