Gregory Frost is an American author of science fiction and fantasy, including the Shadowbridge series, Fitcher’s Brides, the Philip K. Dick-ian science fiction novel The Pure Cold Light, as well as two novels derived from the Celtic epic the táin bó cuailnge. His short fiction has appeared in many anthologies and magazines, including Asimov’s Science Fiction, including the Readers’ Award winner, “Lock Up Your Chickens and Daughters, H’ard and Andy Are Come to Town,” collaboratively written with that Michael Swanwick. He directs a fiction writing workshop at Swarthmore College in Swarthmore, Pennsylvania.