Leon Rippy as the Hunter, a loner who saves Mr.Fisher Stevens as Marvin Gerard, Reddington’s personal attorney.Clark Middleton as DMV employee Glen Carter.Enrique Murciano as FBI investigator Julian Gale.Christine Lahti as National Security Advisor Laurel Hitchen.Ulrich Thomsen as Alexander Kirk/Konstantin Rostov, the man who claims to be Liz's father.James Spader as Raymond 'Red' Reddington.See also: List of The Blacklist characters Main cast The final episodes reveal the existence of a suitcase containing human bones of unknown origins that figure prominently in the next season. Kaplan's knowledge to bring down Reddington. FBI Agent Julian Gale ( Enrique Murciano), the former partner of Donald Ressler ( Diego Klattenhoff) on the Reddington Task Force, is assigned to the Reddington investigation and Gale tries to use Mr. Kaplan attempts to dismantle Reddington’s organization. Kaplan survives the attack and begins exposing the trail of dead bodies left by Reddington’s criminal activities. Kaplan ( Susan Blommaert) for her efforts in hiding Liz and her baby from him, but Mr. Reddington ( James Spader) attempts to kill Mr. Kirk discovers that Liz is not his daughter and abandons his obsession with winning her trust and loyalty. The fourth season resolves the question of Alexander Kirk's ( Ulrich Thomsen) relationship to Elizabeth Keen ( Megan Boone).

Watch the blacklist season 5 episode 4