【John Reese/Harold Finch】TENET (Part 1)

The young Harold was hunted by the authorities for treason. One night a CIA agent named John came from no where and saved him. After growing up, Harold suspected that his fiance John was hiding something from him. "Why would you ever choose the career where this was an occupational hazard?" "Well, I tried to quit. But some jackass told me I needed a purpose." Harold should have thought about the possibility that this "jackass" refers to him. His future self. Viewing the Part 1 and 2 together is highly recommended.