Donnie Yen found intriguing ways for his character to mirror John Wick. Photo: Handout
John Wick 4's not-so-secret weapon is the biggest action star to join the franchise: Hong Kong cinema icon Donnie Yen.
As the blind assassin Caine, another old friend and antagonist of Wick's maybe-final chapter, he fills the screen with cool wit and lethal grace – a deadly Fred Astaire with a bladed walking stick who steals the movie each time he glides onscreen.
