In a brasserie off teh Boulevard St-Germain, a renowned novelist watches, entranced, the motions of a young woman's hand folding a restaurant bill into a paper boat.Thsi passing observation - slim fingers against a white linen tablecloth - provides the springboard for this story of love and jealousy. The novelist's orderly life vanished the instant he admires htis strange woman's hands; the discipline of forty fruitful years dissolves. On an impulse, he prposes. She answers without hesitation - yeas, she will marry him, but only on her terms. She will occupy his house, but not his bed. When she moves in, Kati upends her new husband's meticulous domestic arrangements, then his sanity. Her stubborn detachment tramsforms the writer from a cool, amused observer of life into a creature ravaged by doubt, passion and jealousy.