What happens when adopted children reconnect with their birth families? This subject has served as the basis for several extremely compelling documentaries in recent years, including Three Identical Strangers and Twinsters. Joining them is Found, a gut-wrenching new documentary on Netflix from Amanda Lipitz, in which three adopted teens across America discover they are blood-related cousins from China. As the cousins bond and decide to learn more about their roots, they hire a Beijing-based genealogy researcher named Liu Hao, who quickly becomes one of the documentary’s most riveting characters.