Eleven-year-old twins Oliver and Celia Navel could care less about adventure and they really do not like excitement. They’d rather be watching television. Unfortunately for them, their thrill-see…
If Oliver and Celia Navel had any hopes this year would be less life-threatening than the last, their hopes are quickly shattered…along with their television set. When a strange scientist warns t…
Oliver and Celia Navel have traveled the world in search of their persistently lost mother. But the twins are in for the adventure of their lives when they're shipped up to the North Pole - where (…
When the twins get separated from Alexander, they join the thousands of orphans in the streets of Victorian London. Maisie becomes an orange seller and Felix a chimney sweep as they search the fogg…
While visiting their father in New York City, Felix and Maisie use a shell she brought from The Treasure Chest to travel to late 1800s Hawaii, where they meet a young girl who will one day be Queen…
In book five, Felix and Maisie re-enter The Treasure Chest and suddenly find themselves in the midst of a Lakota village. While exploring they meet a young man, soon to be known as Crazy Horse--and…
Twins Felix and Maisie, along with their Great-Aunt Maisie and Great-Uncle Thorne, are transported back in time to Coney Island where they meet a young Harry Houdini.
Now that the twins have begun to settle into their new lives at Elm Medona, they delve deeper into The Treasure Chest and uncover more about the Pickworth family, including the disappearance of the…
When their parents divorce, twelve-year-old twins Felix and Maisie move with their mother to live in the attic of a historic Newport, Rhode Island, mansion where they discover a hidden room that ca…
All eleven-year-old twins Oliver and Celia Navel want to do is watch television, but their explorer father takes them in search of El Dorado, the Lost City of Gold, and their long-lost mother.