The Magician

A fantasy novel by Michael Scott, the second book in the six part series, The Secrets of the Immortal Nicholas Flamel. 
15 year old twins, Sophie and John Newman are now in Paris with the alchemyst, Nicholas Flamel and his friend, Scathach. They now face Niccolò Machiavelli and his rival but also colleague John Dee. 
While avoiding Machiavelli and Dee they travel to some friends of Flamels who help Sophie with her new powers and train her in controlling her aura and using elemental magic of fire. 

This is definitely a children's series it is a good book and series however the twins are I.mature especially Josh, which is expected with them being children. This book definitely has more action than the previous book. 
I like how the book is partly based on real historical people and also myths however some action scenes where a little too long.