Hey, speak of the devil! Former (and future?) Stargate television series co-creator/writer/showrunner Robert C. Cooper casts his upcoming miniseries.  Joining him on Unspeakable, none other than fellow Stargate alum Michael Shanks - https://www.hollywoodreporter.com/news/sarah-wayne-callies-michael-shanks-join-tainted-blood-scandal-miniseries-unspeakable-1089817 Also on board for Unspeakable is former Stargate writer-Executive Producer Carl "The Truth" Binder - (Carl Binder - file photo) Meanwhile, former…