Book on vampires

A book on vampires was published at some point before July, 1991. Quirinus Quirrell told Harry Potter and Rubeus Hagrid that he was going to Diagon Alley in order to buy a copy of this book, when in reality he wished to break into Gringotts Wizarding Bank to steal the Philosopher's Stone.

Appearances

 * Harry Potter and the Philosopher's Stone (video game)