Butter is a coming of age tale set against the backdrop of small-town Minnesota during the 1970s and told from the perspective of an eleven-year-old girl, Iris, who learns from her parents that she is adopted. The story of Iris's childhood is at first beguiling and innocent: hers is a world filled with bell-bottoms and Barbie dolls, Shrinky Dinks and Shaun Cassidy records, TV dinners and trips to grandma's. But as her parents' marriage starts to unravel,...