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.
Agents of S.H.I.E.L.D. series called "S.H.I.E.L.D." to be written and directed by Joss Whedon, with Jed Whedon and Maurissa Tancharoen also writing. Disney CEO Bob Iger greenlit the series after watching the Marvel One-Shot short film "Item 47". In April 2013, ABC announced that the series would be titled "Marvel's Agents of S.H.I.E.L.D.", and it was officially picked up for a full season of 22 episodes in May 2013. Jed Whedon, Tancharoen, and Jeffrey Bell act as the series' showrunners, with Bell joining the show to help the inexperienced former pair with hiring crew members and "navigating the politics of studios and networks",