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The squad is on high alert after an apparent threat is made on Riggs' life; with Murtaugh taking on more responsibility at work, he and Riggs have to deal with their changing relationship; Trish gets caught up in some trouble.

Lethal Weapon

One Day More

On Murtaugh's first day as interim captain, the wife of a popular businessman is abducted; the squad finds a connection in the case to Riggs' father; Riggs is left to grapple with his family and work.

Family Ties

After a mansion break-in turns into a homicide, Murtaugh and Riggs set out to find the culprit; Murtaugh and Trish question their trust in Riana; Riggs recalls his troubling childhood and finds a true family with Molly and Ben.

Jesse's Girl

Riggs and Murtaugh investigate a case of a missing person while attending Leo Getz's surprise wedding; Riggs comes face-to-face with someone from his past; Murtaugh receives news that might change his life forever.

Leo Getz Hitched

The duo sets out to unlock a case about a veteran hit man who Murtaugh has followed for years; Riggs struggles to find a connection with his father; Murtaugh scares Riana with his overprotective driving lessons; the team's trust is tested.

Frankie Comes to Hollywood

After an argument on a construction site reaches a fatal end, the squad works to untangle facts about the incident; Riggs struggles to rekindle his relationship with Molly; Trish tries to close a big deal at work.

The Odd Couple

After the city's gun buy-back program is robbed, the team hunts for those responsible; Murtaugh walks on thin ice with Trish; Riggs finds an unlikely friend; Captain Avery is reunited with a college frenemy who has key information about the case.

Ruthless

Murtaugh and Riggs search for the culprit of a local jewelry heist; Murtaugh gets called "grandpa" by another parent while at the playground with Harper; Riggs deals with withdrawal from drinking.

An Inconvenient Ruth

Detective Bailey's sister runs into trouble with the law, and she must decide how far she'll go to protect her family; Murtaugh must help Riana navigate boy problems; Riggs deals with the fallout of a night of heavy drinking.

Double Shot of Baileys

An escaped patient of Dr. Cahill's is murdered; Riggs' anger gets the better of him; Avery considers whether he is fit to serve; family tension runs high between Murtaugh and Trish when they have to make big decisions about R.J.

Better Living Through Chemistry

When Riggs visits his father-in-law in prison, an old secret about his deceased wife comes to light; Murtaugh tries to impress Capt. Avery; Trish and Leo Getz try to solve a murder on their own.

Diggin' Up Dirt

Riggs and Murtaugh are thrown into the world of counterfeit money; a group of teenagers inadvertently get involved, and it strikes a chord with Murtaugh; Riggs decides to visit someone from his past.

Funny Money

Detective Roger Murtaugh and his colleagues at the LAPD investigate cases.

S2 E13 | Better Living Through Chemistry

E22 | One Day More

E21 | Family Ties

E20 | Jesse's Girl

E19 | Leo Getz Hitched

E18 | Frankie Comes to Hollywood

E17 | The Odd Couple

E16 | Ruthless

E15 | An Inconvenient Ruth

E14 | Double Shot of Baileys

E13 | Better Living Through Chemistry

E12 | Diggin' Up Dirt

E11 | Funny Money