Alison O’Donnell reprises her lead role in BBC1 acclaimed murder-mystery ‘Shetland’

A double missing persons case blurs the line between the personal and the professional, as Calder and Tosh are drawn into a labyrinthine investigation.

When Tosh’s friend, Annie Bett, goes missing she suspects something is seriously wrong. Ruth Calder – now living in Shetland – has no time to recover from a life-threatening ordeal of her own, as together they set out in search of Annie and her young son, Noah.

They discover that accountant Annie is estranged from her husband, Ian, and has been staying with mussel farmer John Harris and his two sons, Patrick and Fergus. Worryingly, there’s no sign of Annie there either.

Calder follows Tosh’s instincts and looks for Annie at the home she shared with Ian. There, they discover Professor Euan Rossi, who claims to have been Annie’s Oxford University tutor many years ago.

Suspicions are stirred when Tosh and Calder learn Rossi travelled all the way to Shetland after Annie left him a distressed voicemail the night she vanished. Calder can’t shake the feeling there’s more to Rossi than meets the eye…

Loud & Clear’s wonderful Alison O’Donnell returns as DI Alison ‘Tosh’ McIntosh for a new series of ‘Shetland’ from Wednesday 6 November on BBC iPlayer and BBC One.