The Americans (2013)

A pair of deep-cover Soviet spies masquerades as a typical DC couple whose children, neighbors, coworkers, and friends are completely unaware of their activities. At home, they're the stereotypical parents of stereotypical kids; at work, they pose as travel agents; but at night, they weave a web of confidantes, lovers, dupes, and historical figures from the Reagan-era Cold War. The startlingly realistic plot twists force the viewer to consider the real cost of an undeclared war, what it takes to protect one's beliefs, if it's worth it, and if it actually worked for either side.