Doctor Who Extra: The Zygon Inversion By TGT | 8th November 2015 The BBC have released several behind the scenes videos from The Zygon Inversion, which you can watch below: Share this:Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on WhatsApp (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to share on Reddit (Opens in new window) Related Posted in News and tagged Behind The Scenes, Doctor Who Extra, The Zygon Inversion