10 Best Person Of Interest Episodes

10. The Devil You Know

Following the fall of HR, Person of Interest's organised crime elements had been left on the backburner. Season Four reignited the struggle for control of New York's underworld, as tension simmered between Dominic's emergent Brotherhood and reigning kingpin Elias. In The Devil You Know the tension came to a head, as Dominic ruthlessly made his move and Elias struggled for survival with the aid of Reese.

Shaw had similar problems, as the collapse of her cover identity resulted in an explosive shoot-out with Martine and put her firmly on Samaritan’s radar. With Root and Fusco occupied with getting Shaw back to the subway and avoiding Samaritan’s gaze, the situation for Reese, Elias, and his faithful lieutenant Anthony quickly became desperate.

The episode gave greater depth and humanity to the already complex Elias, providing additional details of his origins and further proof of his touching sense of loyalty. It also finally shed light on the previously mysterious Anthony in the moments before his moving death. Elias' fury over the loss of his childhood friend ensured that the episode ended on a powerful note, and left viewers desperate to discover how the bereaved crime lord would take his vengeance.