Just when you you knew everything there was to know about Princess Diana, an exclusive REELZ special goes behind another side of her tragic story. In The Diana : Revenge of a , airing on Saturday, March 20, those who witnessed the princess’ marriage descend into tragedy speak about her desolation in what was said to be an off-the-record interview with BBC royal reporter Jennie Bond

According to the , despite the risks, Diana was desperate to get her story out before her pending divorce. She explained her difficult situation to Bond in an alleged private conversation revealed in this special for the first time.

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A stunned nation watched as Diana would go on to pour her heart out on national television. She revealed a royal marriage in crisis, infidelities on both sides and a sense of personal misery that made her incredibly sick. The interview with Bond, conducted in secrecy, according to the doc, “affected public perceptions of the monarchy and prompted a constitutional crisis.”

The explosive documentary that Princess Diana had a key concern.

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With the help of previously unseen documents and footage, as well as eyewitness testimony from inside the room, viewers will discover how and why this groundbreaking tell-all interview came to happen. 

The Diana Interview: Revenge of a Princess airs March 20 at 8 p.m. ET/PT on REELZ. 

Watch REELZ on DIRECTV 238, Dish Network 299, Verizon FiOS 692, AT&T U-verse 1799 and in HD on cable systems and streaming services nationwide. Find REELZ on your local cable or satellite provider at www.reelz.com.