Lethal Weapon is a 1987 American buddy cop action movie. It was directed by Richard Donner and produced by him and Joel Silver. It was written by Shane Black. It stars Mel Gibson and Danny Glover as LAPD sergeants. Gibson plays narcotics sergeant Martin Riggs and Glover plays homicide sergeant Roger Murtaugh. They are very different from each other. However, they have to work together to stop a gang of heroin smugglers, including characters played by Gary Busey and Mitchell Ryan.