Good Omens miniseries coming from Neil Gaiman & Amazon! Amazon Studios today announced it has greenlit Good Omens, an hour-long limited comedy series based on Neil Gaiman’s (American Gods) and Terry Pratchett’s (Colour of Magic) acclaimed novel of the same name. Set to debut in 2018 on Prime Video, the six-part Good Omens miniseries has been entirely written by Gaiman, who will also serve as showrunner.