Though it’s based on a short story by Robert A. Heinlein (“All You Zombies”), this Australian sci-fi item arguably comes closer to the spirit of Alan Moore’s writing than the movie adaptations of Watchmen, V for Vendetta, or The League of Extraordinary Gentlemen did. Like Moore, writer-directors Peter and Michael Spierig show affinities for serious literature as well as pulp fiction (Virginia Woolf’s Orlando is a major point of reference here); interwoven with the loopy SF plotting are some rather grown-up considerations of longing and psychological pain. This begins in 1970 in an alternate-universe New York, where two aspiring writers (Ethan Hawke and Sarah Snook, both fine) meet at a bar and trade stories about their lives; what follows involves time travel, covert space missions, and some body horror reminiscent of early David Cronenberg films.