The Blacklist: Dr. Bogdan Krilov

"Dr. Bogdan Krilov" is the nineteenth episode of season four of the super-spy crime drama series The Blacklist and the thirty-fourth episode of the series overall. It was directed by David Platt with a script written by Daniel Knauf and Vincent Angell. It first aired on NBC on Thursday, May 4th, 2017 at 8:00 pm.