On their many attempts to reach the North Pole, Robert Peary and Matthew Henson spent a lot of time in northwest Greenland. So much time that they, like many explorers before them, formed intimate relationships with Inughuit women. Their sons from those unions, Kali Peary and Anaukaq Henson, grew up in their Arctic communities never knowing their fathers.

But in the 1980s, an ambitious Harvard neuroscientist brought Kali and Anaukaq to the United States to meet their American relatives. It was a joyous, unforgettable experience—but the family reunion also brought up some painful memories and uncomfortable questions.