The show's creator, Veena Sud, will head up the new season, and Mirelle Enos and Joel Kinnaman, who respectively played detectives Sarah Linden and Stephen Holder, will return along with new cast members Peter Sarsgaard, Elias Koteas and Amy Seimetz.
The drama will focus on a new case, which will be resolved over the course of 10 episodes, and end with a two-hour finale.
"The Killing" premiered to huge critical acclaim. But critics and fans were angered at the end of the first season when the investigation of the murder of Rosie Larsen was left unresolved and with many loose ends.
Fans of the show contended a resolution had been promised.
AMC canceled the show soon after the end of the second season when ratings declined, but later announced it was bringing the series back.
The third season starts a year after the close of the Larsen investigation, and Linden is no longer working as a detective.
But when her ex-partner Holder's search for a runaway girl leads him to discover a gruesome string of murders connected to a previous case handled by Linden, she is drawn back into the life she thought she had left behind.
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