As Red sets Liz and the Task Force on the trail of an eco-terrorist with a mysterious connection to Alexander Kirk, Tom takes matters into his own hands.

When Alexander Kirk contracts a mysterious group that specializes in hacking the world's most secure computer systems, Red and Liz see an opportunity to make a move on Kirk's organization.

Red pressures Dr. Shaw to locate a former patient. Liz contemplates the implications of her ties to an increasingly desperate and dangerous Alexander Kirk. Mr. Kaplan comes to a critical realization about her future.

After weeks of hunting for Dembe, Red and the Task Force finally get a lead on his whereabouts when Aram goes missing. Meanwhile, Dembe takes a calculated risk as Red closes in