Guest Stars James McArdle as Alec Nicholas Farrell as Eyre Crowe Kate Ambler as Muriel Bernhard Schütz as Helmuth Moltke Stephan Szász as Jagow André Kaczmarczyk as Jens Holger Kunkel as Falkenhayn Niall Cusack as Benckendorff George Lenz as Mensdorff Chris Kelly as Gavrilo Princip Simon Coury as Franz Ferdinand Mary Moulds as Sophie Chotek