The Enemy Within

NBC | 10:00 pm

Fans of this well-received new drama series have been waiting to have some story blanks filled in, and they may get some answers in the new episode "An Offer," which is heavy in flashbacks that reveal the fateful chain of events that led CIA Deputy Director Erica Shepherd (Jennifer Carpenter) to commit treason and betray her country. The hour also provides new perspective on the ensuing investigation that set her on a collision course with Will Keaton (Morris Chestnut).