New York Times bestselling authors Lisi Harrison and Daniel Kraus deliver a slightly scary, extremely addictive contemporary middle-grade series—perfect for fans of R.L. Stine’s Goosebumps and Ann M. Martin’s The Babysitters Club.   It’s been a month since the Graveyard Girls—Gemma, Whisper, Sophie, Frannie, and Zuzu—discovered Silas Hoke’s empty grave. A month, and no answers. That changes when messages from the other side start to creep up on the Graveyard Girls. Gemma’s go