Traces the author's three-year investigation into what constitutes family, describing how, after receiving an e-mail from a stranger who claimed to be a distant cousin, he embarked on an effort to build the biggest family tree in history.

"An acclaimed journalist travels the globe to solve the mystery of her ancestry, confronting the question at the heart of the American experience of immigration, race, and identity: Who are my people? Alex Wagner has always been fascinated by stories of exile and migration. Her father's ancestors immigrated to the United States from Ireland and Luxembourg. Her mother fled Rangoon in the 1960s, escaping Burma's military dictatorship. In her professional...