There are twenty-four books in the original series, published regularly between 19.

This series is very popular and has been sold internationally. Amy also seeks to help the other clones in the project, and encounters a number of other children and teenagers with genetic modifications or supernatural powers. Throughout the series Amy struggles to live a normal life as the mysterious Organisation tries to use her and the other Project Crescent clones to create a master race and take over the world. She was created in the government-funded Project Crescent, and was kidnapped and adopted by one of the scientists after a change of heart. 'Replica' is a children's science fiction series about Amy Candler, a young teenager who discovers she is one of thirteen cloned girls who have been genetically modified to have superhuman abilities. She began publishing her work in 1984 under the pseudonym Shannon Blair, and has since had much success, particularly with the internationally selling Replica series. John's University, New York for over twenty years. Marilyn majored in English at Emory University, going on to study a master's degree in library science at Emory and a Doctor of Philosophy degree at the University of Chicago, with the thesis title 'The nature of didacticism as related to romance and sexuality in young adult novels, 1965–1978'. She kept a diary as a child and wrote in a wide range of formats. She spent most of her childhood in Atlanta, Georgia, although she spent her tenth year in Montgomery, Alabama and her thirteenth in Ann Arbor, Michigan. Marilyn Kaye was born in 1949 in New Britain, Connecticut. She is the author of over 100 children's and young adult novel series, including the successful Replica and Gifted series. Marilyn Kaye (born 1949 ) is an American children's writer. Children's literature, Young adult literature, Science fiction

The Vanishing by Marilyn Kaye