'Person Of Interest' Season 4 Recap: 'Karma': Will Jim Caviezel, Michael Emerson Revisit Nathan's Death?

Season 4 of Person of Interest continues with an all-new action-packed episode on CBS. With Shaw (Sarah Shahi)'s whereabouts still unknown, will Finch (Michael Emerson) and Reese (Jim Caviezel) lose their 'Karma' as they revisit Nathan Ingram (Brett Cullen) tragic murder?

The Machine remembers what happened after Nathan's death. In a wheelchair, Finch investigates Alicia Corwin, calls her, and threatens her life. Finch already has a bomb ready to blow but the Machine sends him a warning. 

In the present, Finch is talking to Dr. Shane Edwards about his accident and injury. Outside, Fusco (Kevin Chapman) and Reese are listening in on their session. Finch plants a bug in his office before he leaves. He then meets with another patient, who is getting beat up by her abusive husband. Edwards reminds her that karma has a way of getting back at everyone.

In his therapy session with Dr. Iris Campbell (Wrenn Schmidt), Reese retreats when the conversation towards about loss and mourning. Finch breaks and enters into Edwards' apartment, gives meat to the guard dog, Hector. Reese discovers Edwards has planted a gun in someone's locker and then enters a bank, dropping off a smoke grenade. All of this is an elaborate plan to frame his patient's abusive husband for a robbery.   

After breaking into a secret vault, Finch discovers Edwards is a vigilante and is working on his next target. In honor of his dead wife, Edwards is punishing people who deserve it. One of Edwards' previous targets could be coming back for revenge.

Using his therapist as a date, Reese has a way of getting into the gala, where Edwards is attending. Fusco though is having a hard time wearing a cumber-bun. The man, Morris, who murdered Edwards' wife breaks into the gala. Morris tries to tell him something but security grabs him. Reese then saves Edwards before his car is about to explode.

In the past, Finch gets a call from the Machine just as he spots Alicia. The Machine continues to call him until he picks up. Finch is ready to put the bomb in Alicia's car.

In the present, Reese is interrogating Edwards about his wife's murder and Morris.  Finch discovers Morris is going to meet with Roscoe to get a weapon. Edwards is framing Morris again to out him away for good. Finch believes Morris didn't have anything to do with Edwards' murder. 

At Morris' apartment, Edwards continues with the frame-up. Finch and Reese are at odds with each other, which leads to them losing track of Edwards. Edwards finally has a chance to point a gun at Morris. 

In the past, Finch gets Alicia trapped in his car. Alicia swears she didn't know Nathan was going to be murdered, but still takes the blame. Finch shows mercy and lets her live. 

Back to the present, Harold tries to stop Edwards, reminding him revenge will never give him closure. Morris swears he had nothing to do with murder. As Edwards prepare to commit suicide, Reese shows up with his gun aimed. Finch talks some sense into Edwards and gets him to drop the gun.

As Reese reveals his past with Iris, Finch watches Edwards turn his life around.

Readers, what did you think of Karma?