'Person Of Interest' Season 4 Spoilers: Will Jim Caviezel, Michael Emerson Become "The Devil You Know?" [WATCH]

Season 4 of Person of Interest heats up with an all-new action-packed episode on CBS. As the war with Dominic (Winston Duke) intensifies and Elias (Enrico Colantoni) in danger, Reese (Jim Caviezel), and Finch (Michael Emerson) have to team-up with 'The Devil You Know.'

As we previously mentioned, The Machine was beaten by a much more powerful Artificial Intelligence, known as Samaritan. To stay far away from Samaritan's growing radar, Finch (Emerson) and his group assumed normal, regular lives to prevent themselves from getting caught. The stakes are even higher now as the Samaritan is growing an army and a new rival mob boss is taking over the streets.

In Point of Origin, the group finally discovered the real identity of mob boss Dominic. Infiltrating the police academy, Dominic has all the inside information he needs to beat the competition. Reese and Finch have to protect their ally/rival, Elias, when his number shows up.

In an interview with Zap2it, Colantoni explains what makes Elias such an interesting antagonist, "It's not every day you get such a sardonic villain. Usually it's pretty black-and-white, their intentions. You're afraid of them. But Elias allows me to bring a sense of humor and irony, and I think that's rare in any villain on TV. He's just so much fun."

Check out this preview of The Devil You Know here:

We previously mentioned, in Honor Among Thieves, Shaw (Sarah Shahi)'s cover was suddenly compromised when Crimson 6 arrived. The operatives Devon (Nick Tarabay) and Brooks (Theodora Woolley) were once trained by Shaw herself and are now working for Samaritan. Brooks attempted to get rid of the video but the deleted footage was recovered by Samaritan, who reconstructed Shaw's facial recognition.

Point of Origin ended with a major cliffhanger, with the female assassin, Martine, spotting Shaw at her workplace. Before cutting to black, the two faced each other like in a western shootout.

Check out the nail-biting Locked On Target here:

Person of Interest continues Tuesdays, on CBS at 10pm. Readers, are you excited to see The Devil You Know?