Cadence Sinclair Eastman is the eldest grandchild of the wealthy Harris Sinclair. Although her family pretends to be perfect, Cadence knows that beneath the surface, wealth and privilege have taken an insidious toll on her family and that any unhappiness or odd behavior is ignored or repressed to perpetuate the image of refinement. Harris has three daughters, Cadence's mother Penny, and her aunts Carrie and Bess. Harris owns an island called Beechwood Island near Martha's Vineyard and has built a home for himself along with a house for each of his daughters.