The fourth and final season of Nordic Noir masterpiece The Bridge brings the series to a shocking close. A woman is brutally murdered on Pepparholm island, at the base of the bridge. She is identified as Margrethe Thormod, General Director of the Migration Agency in Copenhagen. A motive may lie in a recent deportation scandal that affected Margrethe personally. Henrik Sabroe investigates the macabre murder with his Danish colleague Jonas Mandrup. Henrik misses his brilliant colleague Saga Noren, now in prison. He asks for her help with the new case, but no longer on the force, Saga refuses to get involved. All the while Henrik searches for his missing children, but with dead end after dead end, he is on the brink of giving up his search for them.