The Knights Templar was the most powerful, wealthy and mysterious military order of the Middle Ages, with its members entrusted with protecting Christianity’s most prized relic – the Holy Grail – and harboring secrets capable of great destruction. 'Knightfall' delves into the clandestine world of this legendary brotherhood of warrior monks. From their battles in the Holy Land, to their complex relationship with the King of France, to the betrayal that would ultimately lead to their tragic dissolution, the story of the Knights Templar has never been fully told until now.

Downton Abbey depicts the lives of the aristocratic Crawley family and their servants in the post-Edwardian era—with great events in history having an effect on their lives and on the British social hierarchy.