Fargo season 5 revolved around unraveling the shady past of Dot Lyon, who was introduced as a seemingly mild-mannered Midwestern housewife, but turned out to have a dark history as Nadine Bump. The first half of the season saw Dot’s mysterious past catching up with her as the villainous Sheriff Roy Tillman sent killers and kidnappers after her. Then, in the second half, after revealing Dot’s connection to Roy and the rest of her backstory, the show focused on her efforts to contain the fallout and protect her new life.

https://screenrant.com/fargo-season-5-timeline-nadine-dorothy-explained/