Shetland has returned to BBC One with a mystery rooted in a nine-year disappearance: human remains are found in a vehicle recovered from the water, and the car is traced to respected local GP Dr Raymond Linden.

The central question is not simply who died, but what happened to Linden after he vanished. The BBC’s outline says Calder and Tosh must examine his state of mind and the lives of those closest to him, taking the investigation into “unexpectedly dark and dangerous places.”¹ Linden’s relatives are divided over his fate, while suspicion also falls on the accounts and loyalties surrounding his former wife, Emily.

The new run gives DI Ruth Calder, played by Ashley Jensen, a personal as well as professional challenge. Jensen said Calder has only recently allowed herself to feel settled before “her whole world is shaken again.”² That emotional disruption contrasts with the procedural focus of the case: identifying the victim in the car and establishing why Linden disappeared.

For Alison O’Donnell, meanwhile, series 11 is a farewell to DI Alison “Tosh” McIntosh after 14 years on the programme. She described filming her final scenes as too significant to fully absorb at the time, comparing it to “trying to look directly at the sun.”²

The series also foregrounds the Scottish settings that have become part of the drama’s identity. Production filmed in Greenock and Largs before moving to locations including Lerwick town centre, the sheriff court and waterfront. O’Donnell called Shetland’s landscape “humbling and awe-inspiring,” while Jensen said returning to the islands helps cast and crew feel connected to the place.¹