Celebrity biographer Ian Halperin – who penned the unauthorized 2009 tell-all Unmasked: The Final Years of Michael Jackson – is set to release a documentary about the late singer.

Halperin has been working on a 88-minute Jackson tribute documentary, entitled Gone Too Soon, which uses audio and video footage of the Thriller singer shot before his death last June. The feature is also expected to include interviews with the King of Pop’s personal manager, chef, spiritual adviser, hairstylist, trainer, bodyguard, and attorney.

The film will debut at the MIPTV conference in Cannes, France, next month and will open in limited release in Canada and France June 25, the first anniversary of Jackson’s death.