I came to this book by way of a rabbit hole that started with a prog rock song - Judas Unrepentant by Big Big Train, which is a condensed telling of Tom Keating's tale..
As a creative, Keating's story is fascinating - and maddening. And if his part of the book is to be believed - is there a touch of unreliable narrative here? - his entire career as an art forger (or his term, Sexton Blaker) was a thumb in the eye of the careless and corrupt art establishment.
Keating's part of the book is pure fun - as if he's talking to you over beers in a pub. The Norman part of the book is part detective story and part expose, a slow motion train wreck that will have you in doubt whenever there is news of a record-breaking art auction.
This is a long out-of-print UK title that can be pricey, but a hunt will find you an affordable reading copy. I like to think Keating would get a laugh out of that.