In June of 2020, it was announced that Ozark had been renewed for a fourth and final season. That season was bigger than past seasons of the show
After the FBI slightly walks back its deal with Omar Navarro, Agent Miller goes rogue and arrests him. Wendy and Marty Byrde convince an understandably crabby Omar to convince Javi to take the same deal he took with the FBI, which would get him extradited back to Mexico.
Ozark season four part one ended with a bang (and plenty of blood splatter) when pseudo cartel boss Javi Elizonndro (Alfonso Herrera) blew the brains out of newlyweds Darlene nee Snell (Lisa Emery) and Wyatt Langmore (Charlie Tahan).