Lethal Weapon 4

Lorna is expecting Riggs's baby, and Murtaugh's daughter Rianne is pregnant too. When a ship carrying Chinese immigrants runs aground, the pair uncover a smuggling ring tied to a triad. Murtaugh shelters the Hong family at home, and the triad closes in on everyone. The organization's enforcer is Wah Sing Ku, a triad negotiator and relentless fighter, who uses counterfeit money to free the "Four Fathers," his brother among them. With Detective Lee Butters and Leo Getz backing them up, Riggs and Murtaugh work from a Chinatown restaurant to a pier. Riggs and Lorna marry at the hospital before the delivery.

1. Behind the scenesThe script that became Die Hard 3

   In 1993 Warner tried to buy the spec script Simon Says to rework it into Lethal Weapon 4, but Fox got there first. After many rewrites, it became Die Hard with a Vengeance in 1995.

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2. Behind the scenesTwo films at once

   In July 1993 Warner and producer Joel Silver began working on the fourth film and a fifth, to shoot them back to back. In 1994 Mel Gibson said he wasn't interested in more sequels. The fifth has never made it to the screen.

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3. CameoJet Li's international debut

   Jet Li plays the villain Wah Sing Ku in his international film debut. The film grossed $285 million worldwide and was the tenth highest-grossing film of 1998.

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