Giveaway of A Discovery of Witches by Deborah Harkness

I was asked by Penguin, if I would giveaway a copy of A Discovery of Witches. It is an adult novel, but a lot of the reviews said that it had crossover to the Young Adult fiction. Here is the summary:

A richly inventive novel about a centuries-old vampire, a spellbound witch, and the mysterious manuscript that draws them together.
Deep in the stacks of Oxford's Bodleian Library, young scholar Diana Bishop unwittingly calls up a bewitched alchemical manuscript in the course of her research. Descended from an old and distinguished line of witches, Diana wants nothing to do with sorcery; so after a furtive glance and a few notes, she banishes the book to the stacks. But her discovery sets a fantastical underworl

d stirring, and a horde of daemons, witches, and vampires soon descends upon the library. Diana has stumbled upon a coveted treasure lost for centuries-and she is the only creature who can break its spell.Debut novelist Deborah Harkness has crafted a mesmerizing and addictive read, equal parts history and magic, romance and suspense. Diana is a bold heroine who meets her equal in vampire geneticist Matthew

Clairmont, and gradually warms up to him as their alliance deepens into an intimacy that violates age-old taboos. This smart, sophisticated story harks back to the novels of Anne Rice, but it is as contemporary and sensual as the Twilight series-with an extra serving of historical realism.

The contest will run until Sunday at midnight. Just leave comment, if you want a chance to win the book and pins.