This is book number four in the science fiction series "The Girl with the Turtle Tattoo." The Girl with the Turtle Tattoo is angrily traveling to a distant star on a Dinosapien spaceship. Martian snake overlords have shanghaied her away from her faithful friend Dave King. It marks the end of Homo sapiens since she and Dave are the last surviving humans. But things get even worse when she and her dinosaur crew are stranded in intergalactic space, thirty billion light-years from the Milky Way, pursued by a vicious alien enemy. Dave, refusing to accept that he will never see Sally again, is thrown into the distant past to confront a perverted version of mankind's greatest philosopher. There Dave seeks existential Answers to change the future history of mankind. Though he may never return to the present, he might yet erase the reality where he lost Sally forever...