Ever read In God's Name by David Yallop?

I saw the book in the Catholic section of a well-known bookshop here. I was quite shocked when I first read the synopsis. All I know is that the book is about investigation that Pope John-Paul I was murdered. It seems like another Da Vinci Code but I might be wrong since I don’t read these books. Any comment on this book?

Ps: I’m not intending to buy the book, I just want to know your thoughts/opinion on the book.

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