The Blacklist - Season 4, Episode 15
  • Episode Title: The Apothecary
  • Episode Run Time: 60
  • Episode Air Date: 2017-02-23 21:00
  • Episode Summary: After being dosed with a deadly poison, Red must retrace his steps to uncover who of his closest confidants has betrayed him. Meanwhile, Liz and the Task Force desperately search for the designer of the toxin in a race against time to save Red.