Shetland star Ashley Jensen has revealed the unusual way she got into character ahead of its hotly-anticipated return to the BBC this month. Jensen replaced former series lead Douglas Henshall after he left the show in 2022. The 55-year-old was speaking about reprising her role as DI Ruth Calder in her second time at the helm of the show. She explained the new series of Shetland will be more complex than fans expect, as it jumps back and forth through time to cover a historical case. “There are so many different strands to the story and quite a lot of them are linked. It’s a very complex web t…