Archer searches for his father's identity behind the Iron Curtain, where he falls in love and runs into trouble, requiring the rescue efforts of ODIN agent Barry Dylan.
The episode title, "White Nights," is likely a reference to the 1985 motion picture "White Nights", starring Gregory Hines and Mikhail Baryshnikov. This can also be a reference to White Nights - phenomenon when during northern summer evening twilight is followed by morning twilight and full darkness never happens. Although such thing does not happen in Moscow, but widely associated with St. Petersburg.
The submachinegun Katya Kazanova uses is a PPSh-41, a World War II-era Soviet weapon, almost universally considered one of the best submachineguns designs of the war period and widely distributed to Soviet-aided insurgents and revolutionaries during the Cold War. The sound effect used, however, is inaccurate, as one of the most recognizable traits of the '41 is its fairly high rate of fire, about 900 rounds per minute.
Moscow skyline is pictured incorrectly, showing St Basil church from a place where it can't be seen and overcrowding skyline with churches and spires, most likely as a parody of practice of using well-known landmarks to establish locations.
Word "Директор" on Jakov's door means "Director", but KGB chiefs are actually called "Chairmen"
Gallery of Images
There are 14 screenshots and images from "White Nights" on this Wiki, visit the category page for a complete gallery.