Not just any biographer gets portrayed in a Netflix series. But Andrew Morton is no ordinary biographer.

Morton released “Diana: Her True Story” in 1992. The source of his blockbuster biography was the princess herself, a fact Morton only revealed after Diana’s death . The details of those melancholy interviews, recorded secretly on cassette tape, appeared in the fifth season of “The Crown.”

“In a funny kind of way, the actual buildup to the Diana book was more dramatic than they portrayed it,” Morton tells The Post. “We swept the room for bugs. There was a lot of counterintelligence work going on there.” 10

Morton is in New York for the launch of “Winston and the Windsors: How Churchill Shaped a Royal Dynasty,” his latest book on the royal family. As he marks the publication of

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