Sandra's trust in her team is shattered when she discovers a secret from her past.
The team enter the glamorous, but murky, world of modelling to reinvestigate a 1987 murder.
The team are led into a new mystery when Brian's dog, Scampi, digs up a skeleton on the common.
The team reinvestigates the 1950s murder of a young wages clerk at Battersea Power Station.
A family feud erupts when a rich and lonely old woman is found dead in her home.
When an armoured security van is found at the bottom of a lake, a link's made to a man who disappeared 17 years ago.
When Sandra's mother suffers a fall, the team are drawn into a murder investigation at a residential home.
With Gerry, Brian and Jack hospitalised, Sandra reluctantly takes on a new recruit.