Diana Rayburn

Diana Rayburn is John Rayburn's wife, raising their children in the Florida Keys while her husband's family runs the local inn. Steady and clear-eyed, she stands somewhat outside the Rayburns' tangled history, watching the tensions among the siblings with a wariness that suggests she senses trouble long before anyone says it aloud.

Jacinda Barrett plays Diana as the sane, watchful center of a family sliding toward crisis, and the show uses her that way — an outsider's eye that lets viewers feel the dread building beneath the Rayburns' sunny surface. She doesn't need big scenes; her quiet unease does the work.