<P> Holder tells Caroline that he must make a choice -- `` between me or her . '' She knows he means Linden and says only their unborn daughter matters now . Linden gets called and finds Kyle , who 's been shot by the cadet search party . He identifies Fielding , Knopf , and Rayne as the murderers . Meanwhile , Knopf suggests killing Rayne , but she mentions cleaning up after them when they stole her car the night of the murders . As the detectives arrive , Knopf and Fielding are shot . Rayne confesses to murdering the Stansbury family , insisting that Kyle be left alone leading Linden to infer that Kyle is in fact Rayne 's son who she gave away 17 years previously . Linden wants to use Rayne 's confession and arrest her for all the murders , but Holder wants Kyle for the Stansburys ' . Frantic , Linden points her gun at Holder , thinking he has worked against her , even with Reddick 's investigation . She takes Kyle to his family home , where he becomes aware of committing the murders . Fielding and Knopf were there that night , but left , and Kyle killed his family . At the station , Linden confesses to Reddick having killed Skinner and absolves Holder . Mayor Darren Richmond arrives to squelch the confession . Skinner 's death was ruled a suicide , and no killer cop shall tarnish another cop 's or Richmond 's image . </P>
<P> Holder tells Caroline that he must make a choice -- `` between me or her . '' She knows he means Linden and says only their unborn daughter matters now . Linden gets called and finds Kyle , who 's been shot by the cadet search party . He identifies Fielding , Knopf , and Rayne as the murderers . Meanwhile , Knopf suggests killing Rayne , but she mentions cleaning up after them when they stole her car the night of the murders . As the detectives arrive , Knopf and Fielding are shot . Rayne confesses to murdering the Stansbury family , insisting that Kyle be left alone leading Linden to infer that Kyle is in fact Rayne 's son who she gave away 17 years previously . Linden wants to use Rayne 's confession and arrest her for all the murders , but Holder wants Kyle for the Stansburys ' . Frantic , Linden points her gun at Holder , thinking he has worked against her , even with Reddick 's investigation . She takes Kyle to his family home , where he becomes aware of committing the murders . Fielding and Knopf were there that night , but left , and Kyle killed his family . At the station , Linden confesses to Reddick having killed Skinner and absolves Holder . Mayor Darren Richmond arrives to squelch the confession . Skinner 's death was ruled a suicide , and no killer cop shall tarnish another cop 's or Richmond 's image . </P>
who killed the family in season 4 of the killing
who killed the family in season 4 of the killing
Kyle
Kyle