In 1982, at the height of Guatemala’s civil war, 20 soldiers from the army’s commando unit, called the Kaibiles, invaded the farming village of Dos Erres. Masquerading as leftist guerillas, the squad members cut their way through the small town, killing more than 250 men, women, and children. Only a handful of people survived. One of them, a young boy, was adopted by Kaibil lieutenant Ramrez and raised by Ramrez’s family, who named him Oscar. Just three years old at the time of the massacre, Oscar grew up unaware of his true origins. It wasn’t until almost 30 years later, living in the suburbs of Boston with a family of his own, that Oscar would learn the truth.