Una McCormack is the author of ten previous Star Trek novels: The Lotus Flower (part of The Worlds of Star Trek: Deep Space Nine trilogy), Hollow Men, The Never-Ending Sacrifice, Brinkmanship, The Missing, the New York Times bestseller The Crimson Shadow, Enigma Tales, The Way to the Stars, the acclaimed USA TODAY bestseller The Last Best Hope, and Wonderlands. She is also the author of five Doctor Who novels from BBC Books: The King’s Dragon, The Way Through the Woods, Royal Blood, Molten Heart, and All Flesh Is Grass. She has written numerous short stories and audio dramas. She lives with her family in Cambridge, England. 

Heather Jarman lives in Portland, Oregon, where she supplements her day job as a tired mommy with her writing career. She written several stories and novels in the Star Trek universe.