In 1968 America is in turmoil, engulfed in civil unrest and in the midst of an unpopular war. Yet for Whitney Dane--spending the summer of her twenty-first year on Martha's Vineyard, planning a September wedding to her handsome and equally privileged fiance--life could not be safer, nor the future more certain. Educated at Wheaton, soon to be married, and the youngest daughter of the patrician Dane family, Whitney has everything she has ever wanted, and is everything her doting father, Wall Street titan Charles Dane, wants her to be: smart, sensible, predictable. Nonetheless, Whitney's nascent disquiet about society and her potential role in it is powerfully stimulated by the forces transforming the nation. The Vineyard's still waters are disturbed by the appearance of Benjamin Blaine, an underprivileged, yet fiercely ambitious and charismatic figure who worked as an aide to the recently slain Bobby Kennedy. Ben's presence accelerates Whitney's growing intellectual independence, inspires her to question long-held truths about her family, and stirs her sexual curiosity. It also brings deep-rooted tensions within the Dane clan to a dangerous head. Soon, Whitney's future seems far less secure, and her ideal family far more human, than she ever could have suspected.