這是一座冰柱城市…神奇樹屋這次將傑克與安妮帶到冰凍的北極圈。幸運的是，有個站在雪橇上的海豹獵人借了兄妹倆溫暖的衣服穿。然而，不幸的是，他們被困在裂開的冰上。巨大的北極熊會來拯救他們嗎?還是，他們即將變成冷凍晚餐呢?想知道過程與結局的方式就是閱讀第十二集的故事。

來一次超棒的時空探險吧！
「神奇樹屋」（Magic Tree House）系列描述一對小兄妹傑克與安妮的冒險故事。八歲半的哥哥傑克，理性冷靜，喜歡看書，他會將沿途看到的事物，重點式的記錄在筆記本上；而七歲的妹妹安妮，喜愛幻想與冒險，並且勇於嘗試。
為了解開最後一道謎題，成為圖書館榮譽館員，神奇樹屋帶著傑克和安妮來到天寒地凍的北極。他們能達成任務，回到溫暖的家嗎？。這個系列的英文淺顯易懂，對話簡單口語，可讓已在學習英文的小朋友，藉由故事進入英語的情境，增進英文能力。
The #1 bestselling chapter book series of all time celebrates 25 years with new covers and a new, easy-to-use numbering system
It's icicle city...when the Magic Tree House whisks Jack and Annie to the frozen Arctic. Luckily, a seal hunter on a dogsled lends them warm clothes. Unluckily, they get stuck on cracking ice. Will the giant polar bear save them? Or will Jack and Annie become frozen dinners?
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．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55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.