John Sandford is the author of twenty-five Prey novels, most recently Gathering Prey, eight Virgil Flowers novels, and eight other books, including the young adult novels Uncaged and Outraged, written with Michelle Cook. He lives in Santa Fe, New Mexico.
 
Ctein is an internationally known photographer and expert on photographic printing. He holds a double degree from Caltech in English and physics, and is the author of more than five hundred articles, columns, books, and manuals. A celebrated member of the science fiction community, he lives in San Francisco.