A World Of Strangers by Nadine Gordimer

Toby Hood, a young Englishman, shuns the politics and the causes his liberal parents passionately support. Living in Johannesburg as a representative of his family's publishing company, Toby moves easily, carelessly, between the complacent wealthy white suburbs and the seething, vibrantly alive black townships. His friends include a wide variety of people, from mining directors to black journalists and musicians, and Toby's colonial-style weekends are often interspersed with clandestine evenings spent in black shanty towns. Toby's friendship with Steven Sithole, a dashing, embittered young African, touches him in ways he never thought possible, and when Steven's own sense of independence from the rules of society leads to tragedy, Toby's life is changed forever.