The special will air at 10:00pm on Sunday Aug 12.
It promises to screen never before seen photos and interviews.
Aug 31 marks ten years since her tragic death.
Nearly a decade on, the world is still fascinated by Diana, her love life, and the manner of her untimely death. This documentary features dozens of candid photographs, many of which have never been seen before and interviews that reveal and uncover the truth behind those iconic shots. With exclusive access to the archive of ‘Big Pictures’, we follow her final trail, from Al Fayed’s yacht in St Tropez, to the Ritz in Paris and her last journey, which ended so tragically in the Alma Tunnel.