Uzo Aduba is the latest to join Fargo Season 4. She will star opposite the season’s lead, Chris Rock.

This continues to firm up her stay at FX, where she is also starring in Mrs. America with Cate Blanchett.

Here’s the description:  In 1950, at the end of two great American migrations — that of Southern Europeans from countries like Italy, who came to the US at the turn of the last century and settled in northern cities like New York, Chicago — and African Americans who left the south in great numbers to escape Jim Crow and moved to those same cities — you saw a collision of outsiders, all fighting for a piece of the American dream. In Kansas City, Missouri, two criminal syndicates have struck an uneasy peace. One Italian, one African American. Together they control an alternate economy — that of exploitation, graft and drugs. This too is the history of America.  To cement their peace, the heads of both families have traded their eldest sons.

Aduba’s role is not known at this time. She joins previously announced cast members Jeremie Harris, Glynn Turman, Corey Hendrix, Matthew Elam, Anji White, E’myri Crutchfield, Amber Midthunder, Jack Huston, Jason Schwartzman, Ben Whishaw, Jessie Buckley, Salvatore Esposito, Andrew Bird, Gaetano Bruno and Francesco Acquaroli.

Chris Rock plays the head of one family, a man who — in order to prosper — has surrendered his oldest boy to his enemy, and who must in turn raise his son’s enemy as his own. It’s an uneasy peace, but profitable.  And then the head of the Kansas City mafia goes into the hospital for routine surgery and dies. And everything changes. It’s a story of immigration. assimilation and the things we do for money. And as always, a story of basically decent people who are probably in over their heads. You know, Fargo.