1. Episode 1

6.7

. 20 October 2021. 60 min

When a prominent and controversial Shetlander is shot dead on their doorstep in broad daylight, Perez rushes back from his mother’s funeral to lead the investigation.

2. Episode 2

6.5

. 27 October 2021. 60 min

In the aftermath of the diving incident, the team searches for a link between the two bodies. Meanwhile, Perez must deal with the return of Donna Killick.

3. Episode 3

6.8

. 3 November 2021. 60 min

The hunt is on for Sandy's attacker, before a shocking confession causes tensions to boil over and some Islanders take justice into their own hands.

4. Episode 4

6.8

. 10 November 2021. 60 min

After the shocking events of the previous night, Perez must piece together what happened before a rampaging and vengeful Creggan finds his target.

5. Episode 5

6.5

. 17 November 2021. 60 min

Facing a dead end in the hunt for Galbraith’s killer, Tosh leads Perez to the remote island of Fetlar. Donna asks Duncan for one last favour.

6. Episode 6

6.8

. 24 November 2021. 60 min

As Perez closes in on the identity of Galbraith’s killer, he struggles with Duncan’s secret, while Donna has one more surprise in store.