Zack Whedon an episode of Milch's next series "John from Cincinnati". Alongside his brothers Joss and Jed, he co-created and co-wrote the parody musical "Dr. Horrible's Sing-Along Blog". He has worked on the FOX science-fiction series "Fringe" and the AMC drama "Rubicon". In Jan 2014, Dark Horse Comics released "", a six-issue comic book series written by Whedon with art by Georges Jeanty that continues the story of brother Joss's cult television show "Firefly", and its subsequent film adaptation "Serenity". The comic is also executive produced by Joss Whedon and continues the story roughly 39 weeks after the events of the film.
Science fiction on television being cancelled unreasonably is greatly increased by the attachment of fans to their favorite series, which is much stronger in science fiction fandom than it is in the general population. While mainstream shows are often more strictly episodic, where ending shows can allow viewers to imagine that characters live happily, or at least normally, ever after, science fiction series generate questions and loose ends that, when unresolved, cause dissatisfaction among devoted viewers. Creative settings also often call for broader story arcs than is often found in mainstream television, requiring science fiction series many episodes to resolve an ongoing major conflict.