"No one gets out clean."

Ozark's highly-anticipated fourth season drops on Netflix later this month and it looks like it's going to be the wildest one yet. The final series of the critically-acclaimed show will have 14 full-length episodes, split into two parts consisting of seven episodes each. Netflix shared the full trailer to Twitter over the weekend with the ominous caption: "Your greatest threat will always come from the inside..." https://twitter.com/netflix/status/1479121329450147854 “A super sized season means super sized problems for the Byrdes,” Jason Bateman, who plays protagonist Marty Byrde, previously revealed. "I’m excited to end with a bang.” But what does that mean? Since its release in 2017, the gripping drama has followed the Byrde family’s journey from their normal, suburban life in Chicago to their criminal enterprise in the Missouri Ozarks with a Mexican drug cartel. In season three, the family were at odds with Helen Pierce (Janet Meter), as cartel boss Omar Navarro breathed down their necks. The feud between the two resulted in a shocking ending that left audiences on the edge of their seats - Helen's death. Picking up where season three left off, the Byrdes have now found themselves with a chance to escape their money laundering life in the Ozarks - but their past is coming back to stop them in their tracks.

The freedom the Byrde family so desperately crave now seems to be all down to Navarro, as the new season sees Marty attempt to navigate a deal between him and the FBI.

However, another threat to the Byrde operation is looming on the horizon - as Jonah Byrde (Skylar Gaertner) wants to follow in his parent's footsteps.

Jason Bateman will of course be returning in his leading role of Marty Byrde, with Laura Linney as Wendy Byrde, Julia Garner as Ruth Langmore, and Felix Solis returning as Navarro. A number of fresh faces will also be joining the cast – including X-men's Bruce Davison and Narco's Bruno Bichir. While fans of the show are devastated that season four will be the final installment, they can take solace that in the fact that 14 episodes is a lot - and can pretty much be treated as two seasons. "We're so happy Netflix recognised the importance of giving Ozark more time to end the Byrdes' saga right," producer Chris Mundy told Variety. "It's been such a great adventure for all of us — both on screen and off — so we're thrilled to get the chance to bring it home in the most fulfilling way possible." Ozark Season 4 Part 1 premieres on Netflix on 21 January.