Murtaugh and Riggs chercher for the culprit of a local jewelry heist. Meanwhile, Murtaugh gets called “grandpa” par another parent while at the playground with Harper, sending him into a tizzy, and Riggs deals with withdrawal from drinking
When Detective Bailey's sister, Jess , runs into trouble with the law, Bailey must decide how far she's willing to go to protect her family. Meanwhile, with Trish away on a company retreat, Riggs deals with the fallout of a night of heavy drinking
Murtaugh and Riggs respond to the murder of an escaped patient of Dr. Cahill's who mysteriously goes off the rails. The investigation brings to light a hidden scheme far bigger than they imagined.
When Riggs visits his father-in-law in prison,a walk down memory lane reveals an old secret about his deceased wife. Meanwhile Murtaugh tries to impress Captain Avery, and, united par the death of a mutual friend,
