Deborah Harkness - A Discovery of witches

This is a great book. It is witches and vampires etc for grown ups. It is well written, well researched, adult, esoterically clever and I liked especially the science angle. The best thing for a librarian is that the book starts in the Bodleian Library and we have lots of action there. Our heroine is an American history professor based at Oxford University. She is descended from a long line of witches but has turned her back on this. She is an expert on the science of Alchemy. However, her heritage catches up with her when she manages to access a long hidden alchemical work in the Bodleian. Through doing so she attracts all sorts of interest from the supernaturals living around us, witches, daemons and of course vampires. She meets and falls in love with Matthew Clairmont a charismatic vampire old in years, ( he was at the crusades!) with a keen intellect, a love of yoga, and of course absolutely gorgeous. He is a professor of genetics and hopes to unlock the gene that creates the supernaturals. Togther they begin to attempt to decode the treatise she has found and Diane discovers that supernaturals do not mix and certainly do not fall in love.......... Loved the book, cannot wait for the sequel!