Prince Harry makes a brief cameo in King Charles's new documentary, "Finding Harmony: A King's Vision". Harry made a cameo in his father's documentary | GETTYTRENDING Stories Videos Your SayHis Majesty's new Prime Video documentary looks back at the King's philosophy and lifelong commitment to green issues. The 90-minute film shows His Majesty warning the climate crisis is "rapidly going backwards" with mankind "actually destroying our means to survival". William makes a couple of appearances in the documentary |The actress was among a number of A-list celebrities who attended the premiere of the documentary. Kate Winslet narrated the King's documentary | PAA spokesman for the King said the film was "not a conventional royal documentary".