I’ve long been behind this book: Agosto, by Rubem Fonseca. Today I’ve just downloaded on my Kindle at a reasonable price in its original Portuguese. Stay tuned.
Rubem Fonseca (born 1925) was Brazil’s most highly regarded author of the late 20th century, with a string of critical and popular successes that combined the conventional mystery/thriller format with a sophisticated, polished prose style and a focus on urban alienation.
Read more: http://www.answers.com/topic/rubem-fonseca#ixzz1lyYoRnpn
Rubem Fonseca at Wikipedia.
Agosto – Rubem Fonseca (Resumo) in Portuguese
A Crime is Afoot 
José Ignacio – I’m glad you found this one. I hope you’ll enjoy it and I look forward to your review of it.
Difficult to find any of his books in English Margot, His books have been recently republished in Spanish but too expensive. It was a pleasant surprise to find the Kindle version.