The series has gained notoriety for being canceled on two occasions only for the show to be revived. The show was initially canceled by AMC in 2012 after its second season but was renewed later in the year due to a strong pitch from creator Veena Sud. After its third season in 2013 the series was canceled yet again by AMC and was nonetheless later revived by Netflix who ordered a fourth and final season.
Sofie Gråbøl who plays Sarah Lund in the original Danish series appears in 1 episode as DA Christina Neilson.
Joel Kinnaman was ecstatic to hear that he could drop the F-bomb during the final season because of Netflix purchasing the show.
Bex Taylor-Klaus revealed on an interview that during the shooting of the third season they talked to a lot of the writers, crew members and actors to gather information about who the killer might be, to the point of actually figuring it out before the big reveal came on the show.
Veena Sud has confirmed in an interview that the show depicts the different geographical locations of Seattle. Seasons 1 and 2 depict the working class neighborhoods, while Season 3 depicts the streets and the fourth season depicting the wealthy part of Seattle.