The Blacklist 4×15 Promo “The Apothecary” Season 4 Episode 15 Promo Winter Finale

The Blacklist 4×15 “The Apothecary” Season 4 Episode 15 Promo (Winter Finale) – After being dosed with a deadly poison, Red (James Spader) must retrace his steps to uncover who of his closest confidants has betrayed him. Meanwhile, Liz (Megan Boone) and the Task Force desperately search for the designer of the toxin in a race against time to save Red.