LIAM (42A: "3 Body Problem" actor Cunningham) The Netflix sci-fi series, 3 Body Problem, is an adaptation of Liu Cixin's book series, Remembrance of Earth's Past. The show, which is set mainly in the United Kingdom and China, is about a group of scientists who encounter an extraterrestrial civilization. LIAM Cunningham portrays Thomas Wade, the MI6 chief who is the head of the global Strategic Intelligence Agency. The show's title refers to a classic physics conundrum concerning three bodies that exert gravitational forces on each other.