The Blacklist - Season 4, Episode 20
  • Episode Title: The Debt Collector
  • Episode Run Time: 60
  • Episode Air Date: 2017-05-11 22:00
  • Episode Summary: When Liz becomes the target of a mercenary known as the Debt Collector, Red turns to an unlikely source for help. Meanwhile, Ressler faces an unexpected complication in his efforts to stay ahead of Agent Gale's investigation.