Reese reunites with the team to save an antiquities thief, but the group ends up in a high-stakes heist.
Reese's efforts to leave New York City and The Machine behind are thwarted when The Machine manipulates his travel plans and seats him on a plane next to a new Number.
Finch and Sam try to save Arthur Claypool from Control without Reese's help, since he is still MIA along with Fusco.
The team faces an unusual task when they must save the life of a new Number... who is already dying. Meanwhile, Reese leaves the team and Finch considers his past.
The Machine gives the team a new Number: Simmons, the corrupt HR officer that murdered one of their own. Meanwhile, Finch tries to stop a friend from going too far in their quest for vengeance.moreless
The Machine gives Finch Reese's Number as HR puts out a contract on the "Man in the Suit."
The Machine gives the team 38 Numbers, and they realize that someone is pitting HR against their Russian Mob allies with the intention to set off a war. Meanwhile, Carter's past with her ex-husband is revealed.moreless
The Machine gives Finch and Reese the Number of a hypnotherapist who is using his craft for personal gain. Meanwhile, Carter gets a lead on an antiquities dealer who could give her the means to bring down HR.moreless
While Reese and Finch deal with a new Number, Root abducts Sam to force her to help on a mission for The Machine.
The team's new Number is their youngest: a 10-year-old girl who may be a spy. Meanwhile, Carter continues her hunt for HR.
A New York lawyer is suspected in the death of her husband. When her Number comes up, the team must determine if she's the killer or being framed by the real murderer. Meanwhile, Carter has problems with her new partner when he sees her with Reese.moreless
To get close to a playboy who stalks and--in one case--apparently kills women, Reese and Finch bring in Carter, Zoe, and Sam to get close to him.
While Reese and his new partner Sam try to find a Number, a naval petty officer in town for Fleet Week, Carter tries to eliminate HR for good after being demoted to patrol officer because of a frame-up. Meanwhile, Root settles in to her new life at the asylum.moreless
To combat Root and Decima, Reese and Finch must seek out unusual allies to save The Machine. Meanwhile, HR prepares to eliminate Carter when she probes into Cal's death. And in the past, the final fate of Nathan is revealed.moreless
The Machine becomes increasingly erratic because of the computer virus, and Reese and Finch must find an elusive tech millionaire. Meawhile, Carter puts herself at risk when she tries to find Cal's killer.moreless
While Carter tries to determine if her boyfriend is working with HR or not, Finch infiltrates a tech corporation to determine if their new Number is trying to help the company or hurt it.moreless
Reese and Finch must help their new Number, a counter-terrorist operative who is on the run from her own people.
Chief Boden takes action to try to help a boy who was seen at two fires previouly, one firefighter is on medical leave after an accident at a fire and Casey and Dawson are gradually seeing each other.moreless
While investigating the firing of a lesbian couple from a news station, Kate discovers a scandal that may involve D.A. Davidson. Kate has to choose between Justin and Ben.
Justin's election may be in jeopardy when he introduces Kate to a Brazilian singer and activist. Lauren is attracted to a wealthy businessman who may not be all he seems.
While Lauren helps out Justin, Kate and Ben head to Lake Tahoe to help solve a jurisdictional dispute.
It's Kate and Ben versus Justin and District Attorney Davidson when a surprise witness surfaces in a mediation case.