Shetland will be returning to our screens on 5 November, and ahead of the new season , the BBC have dropped a gripping trailer for the show, while also revealing further casting details for the series. The six-part series will see DI Ruth Calder (Ashley Jensen) and DI Tosh McIntosh (Alison O'Donnell) heading to a remote village to investigate the murder of an elderly woman . The trailer promises plenty of twists and turns with the detectives being accused of looking for a "scapegoat" alongside a fiery explosion. Might there be more deaths before the series ends?

Shetland season 10's synopsis

The synopsis for the series teases an emotional link for one of our detectives. It reads: "In the isolated hamlet of Lunniswick, the body of the retired social worker Eadie Tulloch has been o

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