'Barbarians' (inset) Sabine de Mardt and 'Unfamiliar' Netflix/Gaumont Kopie As Netflix’s latest German drama Unfamiliar gets traction, Sabine de Mardt tells Deadline about being the first ever TV show to film at the German intelligence services’ HQ, plans to reboot Heidi, and another literary adaptation in the works, The Wandering Harlot. The Gaumont Germany topper is also an influential member of the country’s producers association and breaks down what the domestic scene looks like for program-makers. Unfamiliar: Family, Liars, Spies Unfamiliar dropped on Netflix last week and currently sits atop its roster of most-watched non-English-language shows.