In 1927, at the age of twenty-three, Rosamond Pinchot was hailed as "The Loveliest Woman in America." At thirty-three, in a sudden, shocking, and highly public act, Rosamond took her own life, setting in motion generations of confusion in the family she left behind. Nearly seventy years after her demise, her granddaughter Bibi received a box of more than 1,500 pages of Rosamond's diaries and embarked on a seven-year journey to make sense...