Tween readers who enjoy a mix of spooky and funny will love the Unseen World of Poppy Malone books by Suzanne Harper. In A Gust of Ghosts, the second book of the middle-grade series, nine-year-old Poppy Malone's parents, paranormal investigators, are exploring a haunted cemetery in Austin, Texas. There are eerie sounds in the graveyard, and a strange silvery glow. Poppy sees herself as a scientist. She has a log book to record evidence, and she's set a camera trap in the cemetery. She's going to find out exactly what's going on. Unseen World of Poppy Malone #2: A Gust of Ghosts mixes hilarious characters, tons of action, creepy situations, and lively dialogue. It's a great pick for fans of The Books of Elsewhere series.