In this first installment, readers meet Tally Tucker, a ten-year-old spunky kid who is in the business of solving mysteries in the small town of Windfalls. Tally has made it her life's mission to solve mysteries that seem to find her and her twin cousins, Axel and Lexa. When new neighbors move in next door, Tally soon realizes they are very different. These new neighbors have fangs, wear black capes, and hate garlic. Tally knows this can only mean one thing: the neighbors are vampires! Join the fun with Tally as she attempts to drum up evidence to prove to her parents that vampires have moved in next door.