The Blacklist - Season 4, Episode 21
  • Episode Title: Mr. Kaplan
  • Episode Run Time: 60
  • Episode Air Date: 2017-05-18 21:00
  • Episode Summary: Facing a crippling siege on his criminal organization, Red tracks a high-end thief enlisted by Mr. Kaplan for a mysterious assignment. Meanwhile, Aram faces a difficult choice when Agent Gale takes extreme measures in his investigation into the Task Force's conduct.