Reese and Finch get some help from Detective Fusco as they surveil their latest POI, Dr. Megan Tillman, while she’s on call and after hours to unravel the threat surrounding the promising young physician.

Reese goes undercover as an armored car company employee, and faces memories from his past with the CIA.

The battle to bring a crime organization to justice reaches a new level; Reese's number comes up in the machine.