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.
When Liz becomes the target of a mercenary known as the Debt Collector, Red turns to an unlikely source for help. Meanwhile, Ressler faces an unexpected complication in his efforts to stay ahead of Agent Gale's investigation.