Assuming that Linden is the equivalent of Sarah Lund in The Killing (first series), yes, that's what happens to her. At the start of the second series, she's been holed up in the middle of nowhere for a couple of years, checking passports in a place called Gedser on an island in the bottom right-hand corner of Denmark. Then her former boss Lennert Brix begs her to come back to deal with a series of killings...