“I have been following this series for a few years, and was surprised to find that this is likely the last volume. The author had originally planed for the book to have 7 books, and this is only the 6th book. With that said, I think it was time to tie things up because the story was pretty much coming to a close with this book.
Twins Sophie and Josh Newman are finding themselves being drawn to a merger of the ancient past with the present as they are pulled away from their mentors, the immortal humans Nicholas and Perenelle Flamel. Magic and science and characters drawn from mythology and history race to a pretty intense conclusion that (in part) is already known: the destruction of Danu Talis, or Atlantis. The twins have been brought back in time where they reunite with a number of their allies. In the process they start to learn that their parents are not everything they had seen and come face to the ultimate enemies who have been working for millenia to prevent humans from becoming the dominant species on Earth.
Meanwhile back in the present, the Flemels also find themselves coming together with allies and enemies alike as they try to hold the line before the world's monsters, who have been amassing on Alcatraz, are let loose on the streets of San Francisco. The result is an interesting set of battles set at various points on the island and the bridges connecting San Francisco to nearby communities.
There is no question that Scott gives all the characters he has introduced to the series a chance to develop and shine, though that, at times, leads to some dragginess as the book progresses. With that said, the series seems to come to quite a satisfactory conclusion. It was definitely worth the read.”