Not nearly as good as the previous book in the series "...and the Dance of the Giants." While the adventure at stone henge ended with Diedre having second thoughts about marrying Indy, leading to believe we'd probably never see her again, but their on-again-off-again relationship is on for most of the book, with a note that her mother died, which I don't recall being in the last book.
Brody thinks he has found proof that there were European explorers to the Americas long before Columbus (& Leif Ericson though no mention of him) & there is one eccentric English explorer who agrees, Jack Fawcett. Of course, he disappears while in search of proof, Deidre and Indy go looking for him with very little evidence to go on. At times the book is hard to follow, the "seven veils" from the title refer to a way the people in this lost world work, through magic, mystery & dreams, the convoluted plot, particularly near the end, reminds me of Illuminatus!
The middle was quite blase and easy to put down. The ending was not a total surprise, though it kept you guessing till you got there, and somewhat of a letdown.