Book excerpt: From the author of the international bestseller, The Invisible Mountain, comes Perla, a coming-of-age story based on one of the darkest chapters in Argentinean history. Growing up as a privileged only child in Buenos Aires, Perla Correa learned early on not to discuss the profession of her naval officer father in a country still reeling from the abuses of a deposed military dictatorship. But when an uninvited visitor appears in Perla’s home, this encounter sets her on a journey that will force her to confront the unease she has suppressed all her life—and to make a wrenching decision about who she is, and who she will become.