Following the shocking discovery of a body, Ridley intensifies his efforts to unravel what happened to the missing mother and wife. With Carol and the team, Ridley races against time to prevent further tragedies before it's too late.

Retired Detective Inspector Alex Ridley is called back to advise on a complex and compelling murder case by his replacement and former protege DI Carol Farman. Carol is keen to access Ridley’s unique insight into crime-solving which served them so well in the past, but the investigation takes a dark and unexpected twist.