The Beast Jewel of Mars Reshone    by Lee Brackett
Price: Free! 15040 words. Published by Jekkara Press  on July 27, 2010. .
Captain Winters leaves the clean, safe ships of space to descend into the underworld of ancient Mars. An old lover that has fallen under the sway of the old Queens, and Shanga, the going back drug that reverts those of Earth to their bestial nature. Winters knows that naked and defiant she might not resist her own atavistic urges, but is willing to risk all for Jim. A Gender Switch Adventure.