In real life, Nicholas Flamel was neither a philosopher nor a sorcerer, but in this series of books for young teens, he is portrayed as an immortal and an alchemyst.
So far, the series contains only three books: The Alchemyst, The Magician and The Sorceress. According to author Michael Scott's website, three more will complete the series: The Necromancer, The Warlock and The Enchantress. As mentioned above, this book series is for young teens, probably in the 11 to 15 range, though at 37 I've enjoyed them quite a lot.
Quite honestly, I don't recall how I stumbled across the first book in the series, but once I read it, I was hooked. Of course, when I bought it, the second and third books were yet to be published.
But I have since bought the second and third books, in the middle of The Sorceress now.I have enjoyed this series mostly because it features both historical figures (my other reading pleasures are historical fiction) such as Nicholas Flamel and his wife Perenelle, who lived in the 14th century, and Dr. John Dee, who was one of Queen Elizabeth's personal advisors annnnnd William Shakespeare. But the story also contains figures more familiar to the pagan world - such as Hekate, Bastet and Scathach. I've also learned of people I'd never heard of before, like Palamedes the Saracen Knight who supposedly fought with King Arthur after converting to Christianity.



