When a severed leg is discovered in a bricked-up chimney flue the team get to work identifying the victim and cause of death. Cassie’s replacement on the force, DCI Jess James, has a rocky start as she clashes with a grieving Sunny.

The team work to identify the body found in the chimney flue as forensics reveal the cause of death. Jess and Sunny visit the victim’s mother to break the devastating news. They find the pair had a tumultuous relationship.

The victim’s turbulent past comes to light. While Sunny takes a trip to Paris and Jess drops in on an unsuspecting Lord, the pair continue to butt heads.

Sunny and Jess’s personal lives go from bad to worse while they struggle to keep focused. Meanwhile, the suspect list grows and a mother and son are put under the microscope.

Despite the trouble in their personal lives, Sunny and Jess attempt a reset as they follow the clues in the case.

Can Sunny, Jess and the team bring the clues in the case together and unravel the secrets to solve it?

When a spine is dredged out of Whitney Marsh, a new case begins for Jess and Sunny’s team at Bishop Street CID. Four potential suspects soon appear, each with secrets to hide.

The Bishop Street team investigate the deceased's record, relationships, and enemies, and Jess and Sunny make contact with his widow. No one is as innocent as they first seem.

The team discover Asif, Mel, and Marty’s connections to the deceased, and bring Marty in. Secrets from the deceased's past come to light, and Jess reaches out to her sister.

With the details of the deceased's life becoming clearer and one suspect already being questioned, the Bishop Street team find suspects further afield.

Lies are uncovered, and suspects are taken into custody, but who's protecting who? Meanwhile, Jess plans a conversation with Steve.

For better or worse, Jess and Sunny finally get the truth from Asif, Marty, Mel, and Juliet. But both on and off the case, the truth leads to difficult decisions.