Photo Flash: First Look - THE BLACKLIST's 'Frederick Barnes,' Airing 11/4

On THE BLACKLIST's Nov. 4 episode, titled "FREDERICK BARNES,' after a chemical attack on a subway, Liz (Megan Boone) and the FBI search for the man responsible. Liz reluctantly calls on Red (James Spader) for his help after she finds her search for the next person on the blacklist, brilliant scientist Frederick Barnes (guest star Robert Sean Leonard), heading to a dead end. Meanwhile, Liz wants nothing to do with Red after he implicated Tom (Ryan Eggold). Diego Klattenhoff, Parminder Nagra, Harry Lennix also star.

Check out a first look below!

Photos by: David Giesbrecht/Craig Blankenhorn/NBC

Ryan Eggold, Megan Boone

Megan Boone

DIEGO KLATTENHOFF, Megan Boone

Megan Boone, Parminder Nagra

Geraldine Hughes, DIEGO KLATTENHOFF, Megan Boone

Megan Boone, DIEGO KLATTENHOFF, Geraldine Hughes

James Spader, Deborah S. Craig

Ryan Eggold, Megan Boone