Angie Sage is an English author of children's literature, renowned for her captivating series, including the Septimus Heap series, the TodHunter Moon trilogy, and the Araminta Spook series (known as Araminta Spookie in the United States).

Born and raised in the Thames Valley, London, and Kent, Angie developed a love for storytelling at an early age, influenced in part by her father, who was a publisher. He often brought home blank books, which Angie would fill with pictures and stories. Initially, she pursued a career in medicine, but later changed her path and studied Graphic Design and Illustration at Art School in Leicester. This education propelled her into the world of children's book illustration, and eventually, she began writing her own stories.

Her first major novel, "Septimus", marked the beginning of a series that has captured the imaginations of young readers worldwide.