Tina's sister Meg died in a childhood accident, and for almost forty years, Tina has secretly blamed herself for her twin's death. During a visit to her Uncle Edward and his sister Lucia, who both harbour dark secrets of their own, Tina makes a discovery that forces her to question her memories of the day Meg died.

When Tina confides in her reading group friend Kath, she is encouraged to face the past, and Tina unravels the mysteries of her estranged parents, her beautiful Aunt Simone, the fading, compassionate Uncle Edward, and above all, the cold, bitter Aunt Lucia who casts a long shadow over them all.