Their magic tree house takes Jack and Annie back to a monastery in medieval Ireland, where they try to retrieve a lost book while being menaced by Viking raiders.
Their magic tree house takes Jack and Annie back to retrieve a lost story in ancient Greece, where they witness the original Olympic games and are surprised to find what girls of the time were not allowed to do.
Joe, Fred, and Sam are transported to seventeenth century Japan where they infuriate a Samurai warrior, encounter their great-grandaughters, and save their lives by reciting an ancient form of poetry.
Photographer Horace Carpetine is commissioned to do a portrait for society matron Mrs. Frederick Von Macht; however, the photos evoke both the image and the ghost of the Von Macht's dead daughter, Eleanora, who has returned to seek vengence on those who killed her.
Ten-year-old Justin Robert, vacationing at his family's camp in the Adirondacks, becomes the champion of a pair of common loons that have taken up residence on Fourth Lake.
Twelve-year-old Gregor returns to the world beneath New York City, where he joins forces with Princess Lexa and Ripred the rat to defend the Underlanders and the Nibblers from the army led by the adolescent rat king, the Bane.
In 1932, a twelve-year-old girl who lost her sight in an accident keeps a diary, recorded by her twin sister, in which she describes life at Perkins School for the Blind in Watertown, Massachusetts.
