The fourth and final season finds Jack Ryan on his most dangerous mission yet: facing an enemy both foreign and domestic. As the new CIA Acting Deputy Director, Jack is tasked with unearthing internal corruption, and in doing so, uncovers a series of suspicious black ops that could expose the vulnerability of the country. As Jack and the team investigate how deep the corruption runs, he discovers a far-worse reality—the convergence of a drug cartel with a terrorist organization—ultimately revealing a conspiracy much closer to home and testing our hero’s belief in the system he has always fought to protect.