The Killing is a Danish police procedural set in the Copenhagen main police department and revolves around Detective Inspector Sarah Lund and her team, with each season series following a different murder case day-by-day and a one-hour episode covering twenty-four hours of the investigation. The series is noted for its plot twists, season-long storylines, dark tone and for giving equal emphasis to the story of the murdered victim's family alongside the police investigation. It has also been singled out for the photography of its Danish setting, and for the acting ability of its cast.

When her husband, Lee, is murdered, Sarah Manning comes to realize that she knows nothing about his past. Sarah begins to question who Lee actually was and what he did in his work for a powerful global organization. And why did Lee, a salesman, need to carry a gun?

A married couple must dust off the skills of their youth when they are forced to carry out one final million-euro con. Can they save their marriage, secure the money and pick up their eight-year-old in time for curling practice?