 "Ghost Cadet" has been Mrs. Alphin's most successful book to date, going through several editions in both hardback and paperback.The book's popularity with young readers prompted her publishers to ask for a companion novel – "Ghost Soldier".In "Tournament of Time", one of her early novels, an American school girl living in England befriends the ghosts of two medieval princes, allegedly murdered by Richard III in the Tower of London, and battles the 500-year-old ghost of their murderer.