After spending eight years working as a lawyer, A.E. Warren began to write in the evenings and early mornings as a form of escapism from life in a very small cubicle with lots of files. She self-published her first novels in her spare time, which were picked up by Del Rey UK which is the science fiction/fantasy imprint of Penguin Random House. She is an avid reader, occasional gamer and fair-weather runner. Subject Twenty-One is her debut novel and there will be four books in the Tomorrow's Ancestors series. She lives in the UK with her husband, daughter and hopefully, one day, a wise border terrier named Austen.