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Riggs makes a shocking discovery about Miranda's death, which leads him back to the cartel in a frantic search for answers; Murtaugh is torn between his commitment to his partner and his commitment to his family.

Lethal Weapon

Commencement

Riggs and Murtaugh team up with DEA agent Karen Palmer to gain information on new cartel operations; Trish explores the potential of a new career opportunity.

A Problem Like Maria

A murder involving a high school football star draws Riggs and Murtaugh into the lucrative and corrupt world of college football recruiting; Murtaugh considers a change in his professional life; Riggs spends more time with Karen Palmer.

Unnecessary Roughness

Riggs and Murtaugh must work with DEA agent Karen Palmer to protect an ambulance-chasing attorney who is linked to the cartel; Riggs sees Agent Palmer in a new light; Trish makes a spontaneous decision.

As Good as It Getz

A car crash reveals that Cahill is the target of a murderous stalker; Riggs finds Murtaugh's file in Cahill's office and becomes obsessed with finding out about his past; Roger and Trish discover their daughter has a fake ID.

The Murtaugh File

Riggs and Murtaugh investigate a series of violent crimes targeting members of the same church; the anniversary of Miranda's death weighs on Riggs; Trish and Roger butt heads with R.J.

The Seal Is Broken

Riggs and Murtaugh are enmeshed in an infamous car theft ring when a car containing huge amounts of cocaine is stolen from an impound lot; the lead defense attorney on the case is the notorious Trish Murtaugh.

Brotherly Love

Murtaugh and Riggs suspect that a misuse of power is at play in the death of a Texas Ranger; a dark secret from Avery's past complicates the investigation.

Lawmen

Riggs and Murtaugh become involved in a violent turf war between a new generation of drug dealers and a Koreatown gang; Murtaugh finds comfort in a temporary partner; Trish tries to set Riggs up with her co-worker.

Homebodies

Holiday celebrations are cut short when the precinct is called to examine a homicide linked to the deranged nephew of a drug lord who has ties to Riggs; Murtaugh has a problem with his neighbor's excessive holiday decorations.

Jingle Bell Glock

When a $1 million casino heist turns deadly, Riggs takes a young witness into his care; Murtaugh tries to prove he can be a motorcycle guy; Riggs thinks about what to do with the money he made from selling his Texas home.

Can I Get a Witness?

Riggs and Murtaugh's probe of the murder of an L.A. fashion expeditor leads them to an investigation conducted by the DEA; Murtaugh is on his own while Trish and the kids are away; Riggs struggles with recurring dreams of Miranda.

Fashion Police

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

S1 E17 | A Problem Like Maria

E18 | Commencement

E17 | A Problem Like Maria

E16 | Unnecessary Roughness

E15 | As Good as It Getz

E14 | The Murtaugh File

E13 | The Seal Is Broken

E12 | Brotherly Love

E11 | Lawmen

E10 | Homebodies

E9 | Jingle Bell Glock

E8 | Can I Get a Witness?

E7 | Fashion Police