In the final episode of the series and the second part of the closing story, time is running out for DI Jimmy Perez (Douglas Henshall) and DS Alison `Tosh’ McIntosh (Alison O’Donnell) as their prime suspect lies critically ill in hospital.
However, it’s unclear whether the fire that put him there was a drunken accident or if he was the second victim of Anna’s real killer.
The DI turns his attention to Finlay Caulfield (David Ireland) regarding the photos of Anna on his camera, and while it becomes clear he was obsessed with her, it may not be enough to charge the stalker with her murder.
There are still so many unanswered questions – until TDC Sandy Wilson (Steven Robertson) spots something on the CCTV footage that takes the investigation in a new direction.
Shetland: Blue Lightning (Part 2) is scheduled for broadcast tonight (Tuesday 19 January) on itvCHOICE (DStv channel 123) at 21.00, with repeat showings on Wednesday 20 January at 00.50 and 12.20, Friday 22 January at 22.00 and Saturday 23 January at 01.50.