Chase snoops around PRIDE hoping to discover their dark secrets and struggles with his betrayal of the Runaways. What happens to Karolina when she realizes who/what she really is?

Monk deals with leprosy on two fronts as he's called to testify that a leper is indeed alive so that his money isn't given away.

Riggs and Murtaugh are thrown into the world of counterfeit money. When a group of teenagers inadvertently gets involved, it strikes a chord with Murtaugh, who is dealing with his own issues regarding his son, RJ. Meanwhile, Riggs decides to pay a visit to someone from his past.

Dex goes undercover as a high school substitute teacher after an old classmate of hers enlists her help to find out who planted drugs on her daughter. Meanwhile, Dex and Liz's relationship gets too close for comfort.

A man out on parole claims he did not commit the murder that sent him to prison, but he is killed himself soon afterwards. Meanwhile, Sharon has a meeting with Rusty's mother.

The death of Judge Tommy Wells' daughter puts Intelligence on the track of a pill mill spreading into the suburbs of Chicago and the doctor enabling it. Meanwhile, Voight discovers who's been leaking information from the 21st.

The Lie to Me gang attends a high profile wedding where the father of the groom, a Korean ambassador, has been getting death threats.

When a wealthy matriarch is strangled to death during a video call with her relatives, the woman's daughter employs the services of the Wild/Reid Detective Agency.

Dex goes undercover as a high school substitute teacher after an old classmate of hers enlists her help to find out who planted drugs on her daughter. Meanwhile, Dex and Liz's relationship gets too close for comfort.

Monk deals with leprosy on two fronts as he's called to testify that a leper is indeed alive so that his money isn't given away.

The death of Judge Tommy Wells' daughter puts Intelligence on the track of a pill mill spreading into the suburbs of Chicago and the doctor enabling it. Meanwhile, Voight discovers who's been leaking information from the 21st.

The Lie to Me gang attends a high profile wedding where the father of the groom, a Korean ambassador, has been getting death threats.

Riggs and Murtaugh are thrown into the world of counterfeit money. When a group of teenagers inadvertently gets involved, it strikes a chord with Murtaugh, who is dealing with his own issues regarding his son, RJ. Meanwhile, Riggs decides to pay a visit to someone from his past.

PRIDE makes an offer to the Runaways: surrender or lose. Separated and scared, the kids try to survive at all costs with the fate of Pride and the Runaways hanging in the balance

Zoe McCann is a recovering addict fighting each day to slay her demons; when she is abducted only to wake up in a forest wearing a vintage ballgown, her sanity and resolve are pushed to the limit.

When Monk suddenly acquires a new friend who rarely leaves his side, everyone is suspicious but him.

Amateur detective "Dick Tracy" returns to help Major Crimes investigate the death of a dog who inherited his deceased millionaire owner's fortune, and Rusty offers to get a job to help his mom.

The gang tackles two cases--the suspicious death of a firefighter and the parole of a former gang leader.

Dex is hired by a famous TV judge to help find his prodigal brother but soon finds that she is not the only one looking for him; Hoffman enlists Grey's help to track down a stolen car.

A secret about Riggs' deceased wife is revealed when he visits his father-in-law in prison.

Halstead's partying with Camila unintentionally puts him in the middle of a drug-related homicide. He's forced to choose between loyalty to his unit and his girl. Meanwhile, Voight finally discovers the mole in his unit.

Richmond helps the investigation; Sarah looks for Rosie's key; Stan's son is in trouble; Mitch gets to her destination.

Amateur detective "Dick Tracy" returns to help Major Crimes investigate the death of a dog who inherited his deceased millionaire owner's fortune, and Rusty offers to get a job to help his mom.

Dex is hired by a famous TV judge to help find his prodigal brother but soon finds that she is not the only one looking for him; Hoffman enlists Grey's help to track down a stolen car.

The gang tackles two cases--the suspicious death of a firefighter and the parole of a former gang leader.

A secret about Riggs' deceased wife is revealed when he visits his father-in-law in prison.