I put out a request from friends on Facebook for a book set in or about Peru, and this one came highly recommended. It's written by Mario Vargas Llosa, probably the best-known Peruvian novelist and winner of the Nobel Prize for Literature in 2010.
Aunt Julia and the Scriptwriter
by Mario Vargas Llosa
It sounds like a soap opera of a book and a great read. From Goodreads: "When sexy, sophisticated, older Aunt Julia gets divorced from her Bolivian husband, she heads home to Peru in search of a new mate who can support her in high style. She finds instead her libidinous nephew Varguitas - a young, impoverished law student who works at a ramshackle radio station and aspires to be a fiction writer. Will their love survive the horror of the family? The shock of the community? The considerable difference in their ages? Meanwhile, a new, hotshot scriptwriter of racy radio soap operas, who turns out stories filled with murder, incest, rape, and perversion, has all of Peru listening in. Reality merges with fantasy as Mario Vargas Llosa juggles a madcap cast of characters and carouses through a world of forbidden passion, in a novel The New York Times Book Review named one of the twelve best of 1982."