<P><B>Number 12 is a killer story to sink your teeth into!</B></P><P><I>"We're on a mission!"</I></P><P>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!