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Back for its eighth series, crime drama Shetland sees Ashley Jensen join the cast as DI Ruth Calder, who returns to the Shetland Islands after 30 years away. Here, the star of Extras, Ugly Betty and After Life reveals all about her latest role...

Why does Ruth return to Shetland?

She’s called to a London crime scene for a murder that could be connected to gangland crime. The case inadvertently takes Ruth back to the Shetland Islands because the eyewitness, Ellen Quinn (Maisie Norma Seaton), is suspected of going on the run there, back to where she’s from. Calder feels an affinity with Ellen – after all, she’s a girl who ran away from her life in Shetland and started a new one in the big city.