On Lethal Weapon Season 2 Episode 15,  Murtaugh is sent reeling when a parent at a playground thinks that he is Harper’s grandfather. Here’s a preview of “An Inconvenient Ruth. “

On Lethal Weapon Season 2 Episode 13, Murtaugh and Riggs’ latest case is solving the murder of one of Dr. Cahill’s patients. Matt DiBenedetto guest stars. Here’s a preview of “Better Living Through Chemistry.”

On Lethal Weapon Season 2 Episode 11, Riggs and Murtaugh’s latest case takes them into the world of counterfeit money. Ernie Hudson guest stars. Here’s a preview of “Funny Money.”