萬聖節來臨，魔法師梅林再度邀請傑克和安妮來到卡美拉，這回，梅林要他們幫忙讓公爵的城堡恢復秩序。在年輕魔法師泰迪的協助下，傑克和安妮來到一座靜悄悄又空蕩蕩的城堡，沒想到，城堡裡的西洋棋和紡車竟然自己動了起來，還有巨大的白骨在空中盤旋，傑克和安妮該如何從這個幽靈作祟的城堡中查出線索，並且從可怕的大烏鴉王手中救回泰迪、找回「命運之鑽」呢？
　　★本書中譯本《神奇樹屋30：幽靈城堡的寶藏》由小天下出版
The #1 bestselling chapter book series of all time celebrates 25 years with new covers and a new, easy-to-use numbering system
Jack and Annie are summoned once again to the fantasy realm of Camelot. There, Merlin the Magician tells them that the Stone of Destiny has been stolen. The answer to its disappearance lies within a haunted castle. With a young magician named Teddy, Jack and Annie take on the challenge in an adventure that takes them to new heights and places they couldn't even imagine
Formerly numbered as Magic Tree House #30, the title of this book is now Magic Tree House Merlin Mission #2: Haunted Castle on Hallows Eve.
Did you know that there's a Magic Tree House book for every kid?
Magic Tree House: Adventures with Jack and Annie, perfect for readers who are just beginning chapter books
Merlin Missions: More challenging adventures for the experienced reader Super Edition: A longer and more dangerous adventure Fact Trackers: Nonfiction companions to your favorite Magic Tree House adventures
Have more fun with Jack and Annie at MagicTreeHouse.com

瑪麗．波．奧斯本(Mary Pope Osborne)
　　美國知名兒童文學作家，北卡羅萊納大學主修戲劇與比較宗教學，喜愛不同文化的她，畢業之後，曾到世界各地去旅行。寫作至今已20餘年，作品超過50本以上，並獲得許多獎項，而且擔任過兩屆的美國作家協會主席。
MARY POPE OSBORNE is the author of the New York Times number one bestselling Magic Tree House series. She and her husband, writer Will Osborne (author of Magic Tree House: The Musical), live in northwestern Connecticut with their three dogs. Ms. Osborne is also the coauthor of the companion Magic Tree House Fact Trackers series with Will, and with her sister, Natalie Pope Boyce.
SAL MURDOCCA has illustrated more than 200 children’s trade and text books. He is also a librettist for children’s opera, a video artist, an avid runner, hiker, and bicyclist, and a teacher of children’s illustration at the Parsons School of Design. Sal lives and works in New York with his wife, Nancy.