Chronicle of a Death Foretold

Our finals in World Lit class is to find a novel of Garcia Marquez and report about the theme of the novel..we chose the novel Chronicle of a Death foretold. It tells, in the form of a pseudo-journalistic reconstruction, the story of the murder of Santiago Nasar by the two Vicario brothers.
The story is told from the perspective of a native of the town returning 27 years after the murder, and attempting to recreate what happened on that fateful day. The basis of the plot is that a newly married young woman, Angela Vicario, was found on her wedding night to not be a virgin. After getting beaten by her mother, she names her violator, Santiago Nasar. In order to repair the family's reputation, the two brothers Pablo and Pedro Vicario go to kill Santiago. The entire town eventually learns of their plan, but does nothing to stop it, or warn Santiago, who is brutally killed.
One of the unanswered questions in this book is who actually took Angela Vicario's virginity, for the narrator is unsure why she named Santiago Nasar, although it is suggested by gossip that she did to protect the man whom she loved.