There will be no more Lethal Weapon Season 4. ... Lethal Weapon didn't just hire a new actor to fill in as Martin Riggs, but rather they killed off Crawford's character to ensure that a return would be impossible.

Is Riggs coming back to Lethal Weapon?

Ex-Lethal Weapon star Clayne Crawford is set for TV comeback after being axed from Fox show. ... Clayne Crawford is returning to TV one year after he was fired from Lethal Weapon. The actor, who played co-lead character Martin Riggs, will star in an episode of Hulu's horror anthology series Into the Dark, reports TVLine.

Why did Riggs leave Lethal Weapon series?

Clayne Crawford was fired from Lethal Weapon, with the character of Riggs being killed off. Crawford's firing was tied to his alleged bad behavior on set and clash with co-star Damon Wayans, which both have been pretty open about.