Article continues below advertisementDiane Keaton's long-forgotten documentary about life after death has resurfaced following the beloved actor's passing - a haunting postscript to a career that often wrestled with mortality, faith and what might lie beyond.The 1987 film, Heaven, directed by Keaton, is now being revisited by studios and streaming platforms after the Oscar-winning star's death at 79.Article continues below advertisementSource: MEGADiane Keaton died at 79 years old.