This book is really interesting. It provides great historical evidence for far memory and reincarnation as well as a lot of interesting details about the Cathars and life in the 13th century. My major issue with the book is that it's really difficult to read because the author's organization is terrible. He drops hints of major things he plans to reveal and then he never actually reveals them but rather mentions them as a side note and the reader is left to sort everything out for themselves. If you like jigsaw puzzles where you can't quite grasp what the picture is until the very end, you'll probably like this book. But still, I think the factual evidence presented for Mrs Smith's (A. Guirdham's patient) reincarnation is pretty solid.
O Lord, I read this too. I even made a pilgrimmage to Montsegur in southern France to understand the Cathars.
But it took me many years to understand how distorted the New Age optic on the Cathars is and by the time I returned to Montsegur - many times - I was a Catholic, freed from many lies, which are especially prevalent in the Anglosphere. Here is my penance:
This is one of the books I used to research The Ouroboros Key way back in 2003. It as some great information (enlightening in parts) on the Cathars. If you're interested in the history of these people, it's worth a look.
I must admit, I don't remember much about the reincarnation side of the book, but it has been 11 years...
Picked this up years ago from a charity shop. Interestingly the book contained several typed letters from the author discussing the case with a reader .Guirdham lived in Bath where he worked as a psychologist