This article analyzes the character of John Brennan from the movie The Next Three Days (2010) using Carl Jung’s theory of psychological types and insights from scholars such as Marie-Louise von Franz, John Beebe, and Lenore Thomson. It focuses on four key functions—Introverted Intuition (Ni), Extraverted Thinking (Te), Introverted Feeling (Fi), and Extraverted Sensing (Se)—and uses both script-based and theoretical analysis to explain how these functions appear in John's actions, decisions, and personality. The integration of expanded Jungian perspectives deepens the understanding of Brennan as a quiet but deeply driven and visionary character.