Mimi Alford tells the story of her affair with President John F. Kennedy in “Once Upon a Secret.”

Mimi Alford tells the story of her affair with President John F. Kennedy in “Once Upon a Secret.”

Mimi Alford tells the story of her affair with President John F. Kennedy in “Once Upon a Secret.”

Katherine Boo, the author of “Behind the Beautiful Forevers: Life, Death and Hope in a Mumbai Undercity,” lets a story of poverty tell itself.

Katherine Boo, the author of “Behind the Beautiful Forevers: Life, Death and Hope in a Mumbai Undercity,” lets a story of poverty tell itself.

Katherine Boo, the author of “Behind the Beautiful Forevers: Life, Death and Hope in a Mumbai Undercity,” lets a story of poverty tell itself.