Sink your teeth into Sienna Mercer's twelfth super-girly vampire story for girls. 'We're on a mission!' Ivy and Olivia are together again - and not a moment too soon. The whole vampire community is in a flap. Can the twins discover the identity of the mystery blogger who's determined to expose Franklin Grove's biggest secret? Hold on to your fangs, vamp fans. It's time to go undercover! These kinds of situations only happen in My Sister the Vampire. A vampire book for girls who want to read about young love and innocent paranormal romance.