Angie Sage, born on June 20, 1952, is an English writer primarily recognized for her contributions to children's literature. Her creative journey began in childhood, where she would write and illustrate stories in blank books provided by her publisher father. Although she initially pursued medicine, Sage transitioned to graphic design and illustration studies at art school, skills she then applied to illustrating books. Her debut novel, 'Magyk,' launched the widely successful Septimus Heap series.

Sage has authored several other popular series for young readers. These include the TodHunter Moon trilogy, which serves as a sequel to the Septimus Heap saga, and the Araminta Spook series. She has also penned the Enchanter's Child series and other standalone books. Her work, while focused on fantasy for younger audiences, has established her as a significant figure in contemporary children's fiction.

Angie Sage spent her formative years in the Thames Valley region of London and Kent. Her father, a publisher, fostered her early creativity by bringing home blank books, which she filled with her own written stories and illustrations. This early inclination towards storytelling and visual art led her to art school. After beginning medical studies, she shifted her focus to graphic design and illustration, a path that directly influenced her future career as an author and illustrator.

Sage is best known for her expansive fantasy series for children. The Septimus Heap series, commencing with 'Magyk' in 2005, became a foundational work, followed by numerous sequels and supplementary books. Extending this universe, she created the TodHunter Moon trilogy, a direct continuation of the Septimus Heap narrative. Sage also established the Araminta Spook series, which explores different magical themes for a younger audience, and more recently, the Enchanter's Child series. Her bibliography also includes other individual titles, showcasing a consistent output of imaginative fiction.