

The two occasionally join Jack and Annie, and, when they don't, provide them support instead. Kathleen and Teddy are two apprentices who befriend Jack and Annie during their adventures, with one of these adventures being to free Kathleen from a spell. These books are longer than the previous 28, and some take place in fantasy realms like Camelot. In Merlin Missions, Jack and Annie are given quests by the ancient wizard Merlin the Magician. The second group, referred to as the Magic Tree House: Merlin Missions, begins with book 29, Christmas in Camelot.

The first group consists of books 1–28, in which Morgan Le Fay sends Jack and Annie Smith, two normal children who are siblings from the fictional small town of Frog Creek, Pennsylvania, on numerous adventures and missions with a magical tree house. Other illustrators have been used for foreign-language editions. The original American series was illustrated by Salvatore Murdocca until 2016, after which AG Ford took over. Magic Tree House is an American series of children's books written by the American author Mary Pope Osborne. ( Learn how and when to remove this template message)

( April 2018) ( Learn how and when to remove this template message) Please help improve it by replacing them with more appropriate citations to reliable, independent, third-party sources. (Bowker Author Biography) - biography from Dinosaurs Before Dark (Magic Tree House, No.This article may rely excessively on sources too closely associated with the subject, potentially preventing the article from being verifiable and neutral. Her other books include The Deadly Power of Medusa, Jason and the Argonauts, Haunted Waters, and Moonhorse. Her husband, actor Will Osborne, helps her write the nonfiction companion series, Magic Tree House Research Guides. She is the author of the Magic Tree House series and the Merlin Missions series.

Her first book, Run, Run as Fast as You Can, was published in 1982. Before becoming an author, she worked as a window dresser, a medical assistant, a Russian travel consultant, a waitress, an acting teacher, a bartender, and an assistant editor for a children's magazine. After graduation, she traveled around Europe and Asia. She attended the University of North Carolina at Chapel Hill where she majored in religion. She grew up in a military family, and by the time she was 15 she had lived in Oklahoma, Austria, Florida, and four different army posts in Virginia and North Carolina. Mary Pope Osborne was born in Fort Sill, Oklahoma on May 20, 1949.
