A good Samaritan witnesses a cult style murder but the evidence doesn't add up. Mr. Monk goes undercover with the "Siblings of the Sun" to solve the crime.

When Monk's bank is robbed, he's desperate to help with the investigation; when Captain Stottlemeyer won't let him, Monk takes up an unusual position at the bank.

Natalie is frantic, to the detriment of Stottlemeyer's new car, when it appears a mad man is targeting his victims based solely on their name - Julie Teeger.

When Reese and Finch discover that their latest POI has connections to Cold War Soviet espionage circles, they quickly learn how covert ops were handled in a world before The Machine.

Reese and Finch's game of cat and mouse with Detective Carter becomes infinitely more complicated when The Machine declares that she is their latest Person of Interest. With Carter's life in jeopardy, they must now find a way to protect her without getting caught.

Cole confronts his past when his former mentor, Tom Barnes, delivers alarming news, as he and Murtaugh investigate a robbery of safe deposit boxes. Meanwhile, Murtaugh clashes with Trish's new client, Louie Gutierrez aka "The Gute" and enlists Bailey's help to investigate.

Murtaugh turns to Cole's former mentor, Tom Barnes, for help on a high-stakes cartel case. Meanwhile, Murtaugh and Trish meet Natalie and Maya for the first time, and tensions mount between Bailey and "The Gute", as the new partners begin to work together.

Cole needs to talk to Natalie about their relationship. Murtaugh makes an unlikely friend.

While Major Crimes works against the clock to catch the killer before he claims his third and final victim, Phillip Stroh executes his escape plan.

Sanchez returns from his leave as Major Crimes investigates two homicides across the street from each other that could be related to a string of home invasions.

During the holiday season, Lightman goes to Afghanistan to assist in a mission to rescue two captured marines, and his only source of intelligence is an American expatriate.

Dr. Lightman, Dr. Foster, and Agent Reynolds go to Las Vegas to investigate the disappearance of an unlikely finalist in a poker championship, and none of his fellow finalists are above suspicion.

A frustrated farmer with a bomb drives his tractor to Washington and demands to talk to the president, and Cal is brought in to find out who's really calling the shots.

Sarah places her life on the line after someone dear to her suddenly goes missing. Meanwhile, Holder's past is used against him.

While covering up Skinner's disappearance, Linden and Holder are assigned a new case: the brutal case of a family with ties to a military academy.

When Reese and Finch discover that their latest POI has connections to Cold War Soviet espionage circles, they quickly learn how covert ops were handled in a world before The Machine.

Reese and Finch's game of cat and mouse with Detective Carter becomes infinitely more complicated when The Machine declares that she is their latest Person of Interest. With Carter's life in jeopardy, they must now find a way to protect her without getting caught.

As Detective Carter deals with the fallout from her recent encounter with Reese and Finch, the Machine ups the ante for the duo by giving them four Social Security numbers instead of one.

Cole confronts his past when his former mentor, Tom Barnes, delivers alarming news, as he and Murtaugh investigate a robbery of safe deposit boxes. Meanwhile, Murtaugh clashes with Trish's new client, Louie Gutierrez aka "The Gute" and enlists Bailey's help to investigate.

Murtaugh turns to Cole's former mentor, Tom Barnes, for help on a high-stakes cartel case. Meanwhile, Murtaugh and Trish meet Natalie and Maya for the first time, and tensions mount between Bailey and "The Gute", as the new partners begin to work together.