In the combustible action franchise's final installment, maverick detectives Martin Riggs and Roger Murtaugh square off against Asian mobster Wah Sing Ku, who's up to his neck in slave trading and counterfeit currency. With help from gumshoe Leo Getz and smart-aleck rookie cop Lee Butters, Riggs and Murtaugh aim to take down Ku and his gang.

Lethal Weapon 4 streaming: where to watch online?

Currently you are able to watch "Lethal Weapon 4" streaming on Showtime, Showtime Amazon Channel, fuboTV, DIRECTV. It is also possible to buy "Lethal Weapon 4" on Apple iTunes, Vudu, Amazon Video, Microsoft Store, FandangoNOW, Redbox, Google Play Movies, YouTube, DIRECTV as download or rent it on Apple iTunes, Vudu, Amazon Video, Microsoft Store, FandangoNOW, Redbox, Google Play Movies, YouTube, DIRECTV online.