1-2-3-4, I Declare a Thumb War — Lisi Harrison

#1 New York Times bestselling authors Lisi Harrison and Daniel Kraus deliver a slightly scary, extremely addictive, contemporary middle-grade book series. This first installment of Graveyard Girls is part mystery book and part friendship story, centered around five young teen girls in for the fright of their lives.
 
Meet Whisper, Frannie, Sophie, Gemma, and Zuzu, five friends who tell eerie tales by night and navigate middle school drama by day. In Misery Falls, Oregon, it is the 100th anniversary of the electrocution of the town's most infamous killer, Silas Hoke, and the town is abuzz. When a mysterious text message leads the girls to the cemetery -- where Silas Hoke is buried! -- life can't get any creepier. Except, yes, it can, thanks to the surprise storyteller who meets them at the cemetery, inspires the first-ever meeting of the Graveyard Girls, and sets the stage for a terrifying tale from Whisper that they'll never forget.
 
Book one in a five-book series, Graveyard Girls blends popular scary books for kids (think: Goosebumps) with strong teen girl characters into a fresh, genre-blending middle-grade series. For kids ages 9­­â€"12 in search of girl friendship stories and mystery books, you'll find horror and heartfelt relationships in 1-2-3-4, I Declare a Thumb War.