I. S. Berry spent six years as an operations officer for the CIA and has lived and worked in Europe and the Middle East, including two years in Bahrain during the Arab Spring. She has a degree in Law from the University of Virginia, and is a member of the Mystery Writers of America, International Thriller Writers, International Association of Crime Writers, and the Association of Former Intelligence Workers. The Peacock and The Sparrow was her debut novel, published in 2023. Berry currently lives in Virginia with her husband and son.