At the heart of Happiness, as Such is an absence--an abyss that pulls everyone to its brink--created by a family's only son, Michele, who has fled from Italy to England to escape the dangers and threats of his radical political ties. This novel is part epistolary: his mother writes letters to him, nagging him; his sister Angelica writes, missing him; so does Mara, his former lover, telling him about the birth of her son who may be his own. Left...