Lethal weapon: Two Vietnam-vets-turned cops have only one thing in common : they both hate to work with partners, but when a routine murder investigation turns into a no holds barred war with an international heroin ring, their partnership becomes the key to survival. Lethal weapon 2: Riggs and Murtaugh must guard a free-wheeling witness in a comedy of car chases, gun battles, under-water escapes, even the destruction of a chic hillside house. Lethal weapon 3: Further action by Riggs and Murtagh, L.A. police detectives, whose work routine is anything but routine, joined by an Internal Affairs investigator who loves taking risks as much as Riggs does. Lethal weapon 4: Martin Riggs and Roger Murtaugh, after escaping death from the previous movies are put on a hit list by The Triads. When blood thirsty mercenaries are on their tail, they team up again with Leo Getz and Lorna Cole, a newcomer, to finally put an end to the Triads.

Originally produced as motion picture in 1987. "These unrated versions contain material different from the R-rated versions."--Container. Special features: theatrical trailers ; stunts and action featurette.