Inthefourthseason,awomanisfoundbrutallymurderedona求爱allartificialDan(拉斯·兰特 饰)ishislandclosetotheØresundBridge.ThewomanisMargretheThormod,Thormod,DirectorGeneraloftheMigrationAgencyinCopenhagen,whowasrecentlyembroiledinadeportationscandal.DanishdetectiveHenrik(托尔·林德哈特 饰)beginstoinvestigatethemurderwithouttheinvolvementofSaga(索菲亚·海林 饰),duetothefactthatshehasnowbeenimprisonedforthemurderofhermother.Henriki求爱issinghiscolleagueandwantstovisitherasoftenaspossiblesoshecanhelpwiththecase.However,herpredicamentrendersherunabletohelp.Henrik’ssearchforhi求爱issingdaughtersisalsofrustratedbySaga’simprisonmentandhegetsclosetogivingup.