My latest book from the library is The Enchantress by Michael Scott. It's the last book in an urban fantasy series (soon to be a movie) about the Immortal Nicholas Flamel. Flamel (based on the alchemist of the same name), is an immortal alchenist in possession of a magical book, the Codex, which he must protect from the bad guys, one of whom is John Dee (based on mathematician and occultist of the same name), with the help of teenage twins Sophie and Josh Newman. The books are fun and filled with mythology and magic and history :) My favorite character is Scáthach who is/was, as Wikipedia states, a legendary Scottish warrior woman and martial arts teacher who trains the legendary Ulster hero Cúchulainn in the arts of combat. I liked the first couple of books in the series best, but still didn't want to give up on it before the end.
Here's a short video by the author about the series ...
And you can read an excerpt from chapter one of The Enchantress here.