The focus of season 2 will be Lou Solverson's (Keith Carradine) traumatic case in Sioux Falls back in 1979.
We will meet Molly's mother who was not seen in season 1, and learn what happened to her.
There are a lot of hidden clues in season 1 that will be explained/explored in season 2.
Season 2 will be inspired by the movies Fargo, Miller's Crossing and The Man Who Wasn't There.
The story will be set in Sioux Falls, Luverne and Fargo, and once again the show's base of production will be Calgary, in Alberta, Canada.
Fall 2015 is the return date.
If there is a season 3, characters from season 1 may return, just not in back-to-back seasons.