Written by Shane Black and directed by Richard Donner, Lethal Weapon is the thrill-packed story of two Vietnam vets-turned-cops (Mel Gibson and Danny Glover) who have just one thing in common: both hate to work with partners. But their partnership becomes key to their survival when a routine murder investigation leads to an all-out, take-no-prisoners, martial-arts-and-machine-guns war with an international heroin ring. Fierce, fast and frequently funny, it fires off round after round of cant-miss entertainment.