Catherine Sefton novels are popular among young adult readers, who enjoy the thrill of the supernatural or a first-hand experience of the "troubles" in Northern Ireland. These readers may not be aware, however, that Catherine Sefton is actually the pseudonym for Martin Waddell, the same author whose books for children delighted and enthralled them during their preschool and primary years. Waddell is frequently dubbed "two writers in one." Under his own name he publishes mysteries, ghost stories, light comedies, and picture books for children. As Catherine Sefton he has written more complex, emotionally charged books for young adults, several of which are ghost stories while others are political novels. For both audiences he relies on suspense, humor, colorful characters, and lively dialogue to engage the reader. At the same time he explores such themes as prejudice, self-reliance, and family problems.

Waddell has adapted easily to his two writing...