Kirsten Miller is an acclaimed American novelist best known for creating the Kiki Strike book series. Her literary debut, Kiki Strike: Inside the Shadow City, was introduced in 2006, followed by The Empress's Tomb in October 2007. These novels explore the adventures of Kiki Strike, Ananka Fishbein, and their friends as they navigate New York City's underground passageways. The inspiration for this series stemmed from the 2001 collapse of a Manhattan nursing home's front lawn, revealing a hidden room and igniting Miller's imagination.

In addition to the Kiki Strike series, Miller has authored the The Eternal Ones series, which commenced with its first book on August 10, 2010. She also co-authored the Nightmares! children's series with Jason Segel, starting in the fall of 2014. Beyond her work in middle grade and YA novels, Miller ventured into adult fiction with The Change, which became a Good Morning America Book Club pick for May 2022. Her most recent work, Lula Dean's Little Library of Banned Books, is a satire tackling some of today's most controversial issues.

Kirsten Miller grew up in a small town in the mountains of North Carolina. At seventeen, she moved to New York City for college, where she continues to live and work. Despite being part of a common name confusion, she humorously notes that she is not the Kirsten Miller who wrote All That Is Left, but she imagines that Kirsten is equally lovely and talented.