John Wick: Chapter 4 is an action film directed by Chad Stahelski starring Keanu Reeves, Donnie Yen, Bill Skarsgard and more. The film is playing in theatres right now. 🎥 John Wick Chapter 4 Ending Explained: Decoding the Climax and Post-Credits Scene to Keanu Reeves’ Action Film and How it Sets Up Future Spinoffs (SPOILER ALERT).