Lethal Weapon 4 (1998) delivers the explosive, high-stakes finale to the beloved buddy-cop franchise, reuniting Mel Gibson as the reckless Martin Riggs and Danny Glover as the weary Roger Murtaugh for one last wild ride. Directed by Richard Donner, this action-packed sequel sees the duo grappling with personal milestones—Riggs is expecting a child with his girlfriend Lorna, while Murtaugh faces becoming a grandfather—all while tackling a dangerous case involving Chinese triads smuggling immigrants and seeking to free their imprisoned leaders. The plot thickens with the introduction of Detective Lee Butters, played by Chris Rock, who adds comedic flair, and Jet Li in his Hollywood debut as the formidable villain Wah Sing Ku, bringing intense martial arts action that raises the stakes.

The film balances its signature blend of chaotic action sequences, sharp humor, and heartfelt moments, though some critics note it leans more into comedy than the darker tones of earlier installments. Performances remain strong, with Gibson and Glover's chemistry anchoring the series, while supporting cast members like Joe Pesci and Rene Russo return to round out the ensemble. At 127 minutes, it's a fast-paced thrill ride that pays homage to the characters' journeys, making it a must-watch for fans seeking closure. While the IMDb rating of 6.6 reflects mixed reviews, Lethal Weapon 4 is worth watching online for its nostalgic value, explosive set pieces, and the emotional send-off to an iconic duo that defined 1990s action cinema.