The cast for the upcoming action-thriller Supermax continues to grow as production gears up. The latest update confirms that Jason Clarke has closed a deal to join the project. Specific details regarding the character Clarke will portray remain under wraps at this time. Jackson, who is known for his role in the upcoming Michael, will appear alongside Clarke in the film. For now, the focus remains on the assembly of a cast capable of delivering the intensity expected from an action-thriller of this caliber.