Status Updates From Edward III: The Perfect King

"With a pitiful heart, he knew what he had to do." Not only does it read like a novel but the author is mysteriously able to interpret actions and record thoughts. So much of the interpretation assumes the reader accepts Mortimer's theory that Edward 2 was not murdered and Edward 3 knew. Having read Phillips' 'Edward II' first, in which this idea was carefully refuted, doesn't help. Struggling.