A. S. Walker is the pen name of Andrew Walker. Of British ancestry, Andrew Walker was born in Zambia, Africa, where he lived for two years for continuing travelling around the world with his family. After two years living in England, Andrew moved to Canada, settling in Alberta where he was raised and education, completing degrees in both Physics and Computer Science at the University of Alberta. After completing his education, he moved British Columbia, to take a job in aerospace. Currently, he makes a living creating healthcare software for hospitals, as well as being a part-time author.