Lethal Weapon Season 1 Episode 11 - s01e11 Lawmen - Murtaugh and Riggs are pitted against the LA Sheriff's department when the killing of a Texas Ranger leads them to believe a possible misuse of power is at play. Just as the partners are sure they've found their culprit, the case becomes even more complicated when a dark secret is dug up from Captain Avery's past in the all-new “Lawmen” episode of LETHAL WEAPON airing Wednesday, January 11th on FOX.