Slipknot star Shawn Crahan is to make his directorial debut with a movie adaptation of graphic novel Officer Downe.

Joe Casey has revamped his own comic book about a Los Angeles police officer who crooks can't kill for the big screen and Slipknot's manager Cory Brennan will executive produce.

Crahan is not new to the world of directing - he has helmed many of his band's music videos.