Shetland

A severed hand washes up on a Shetland beach, and before long more body parts are discovered in a bag that has been dumped at sea. The initial forensic investigations reveal that the body parts all belong to the same victim.

A horrifying discovery at the Hayes house changes the course of the investigation; Perez establishes the probable cause for Daniel's murder and his sister Zezi's disappearance.

Sandy admits he gave Calum the pen that he used to kill himself; convinced that McGuire is the key to cracking the case, Perez travels to Glasgow to track him down.

Perez and the team ramp up the pressure on their remaining leads; Perez finds himself in turmoil after his kiss with Alice.

The discovery of Nikki's body intensifies the search for Zezi, and Perez feels that time is running out; an increasingly desperate and distraught Olivia tries to get information from Jamie Hayes.

Olivia has almost given up hope of ever finding her daughter, while Perez closes in on Zezi's location; Duncan is traumatised after his discovery on the beach; Rhona suggests that the department may have a leak.