TANIA CULVER HUMPHREY has spent most of her life grappling with her father’s secrets.
In public, her father, Ellsworth Culver, cultivated a reputation as a globetrotting Christian do-gooder. He taught schoolchildren in Cuba, ran missionary programs in the Philippines, and, in the early 1980s, co-founded the humanitarian nonprofit Mercy Corps with friends from the international aid world. At Mercy Corps, including the nine years he spent as its president, he built programs across three continents, conducted informal diplomacy in conflict zones, and received a medal from North Korea for organizing food and medical aid.
In private, he was sexually abusing Humphrey, his youngest daughter—at times raping her, choking her, and taking explicit photos of her, according to a lawsuit she eventually filed. The abuse, she says, began as far back…