'John Wick' franchise is expanding. Donnie Yen's blind assassin Caine, who was introduced in last year's 'John Wick: Chapter 4', will be the center of a new spinoff. The spinoff will "continue Yen's story arc following the events of 'John Wick: Chapter 4,' as Caine has been freed from his obligations to the High Table," Variety reported. Robert Askins, who's written for Netflix's "The Umbrella Academy," AMC's "The Son" and ...