Un hombre, Tafur, está en prisión. Trata de reconstruir su vida a través de sus memorias para llegar a entender qué lo llevó a cometer un cruel asesinato. Con una prosa que cautiva desde el comienzo, Mario Mendoza sumerge al lector en la ambivalente vida de un individuo que busca liberarse de sus obsesiones. Una extraña enfermedad que aqueja a Tafur desde pequeño ha hecho que se mueva entre los extremos: una vida tranquila que lo lleva a tener horribles visiones y una vida entre los marginados que le procura tranquilidad. Viajando de un extremo a otro transcurren sus días, hasta que logra encontrar un frágil equilibrio entre los dos mundos. Relato de un asesino, la tercera novela de Mario Mendoza, nos presenta un alucinante recorrido por el alma de un hombre, al tiempo que nos obliga a una desesperanzada y lúcida travesía por Bogotá y todas las ciudades que en ella conviven.

Colombian legislation on survivors' pension is one of the most comprehensive and protective in Latin America; it won't require the economic dependence of the members of the couple, or their cohabitation until death, however, some lags in that legislation result in situations of injustice and inequality and a growing and worrisome legal uncertainty. Legislative structure and jurisprudential interpretation formed from family law elements, conservative conceptions and misinterpretations of Social Security Law, have denatured the essence of this pension for survivors of couples and have also generated chaotic solutions, in such a way that at the present there are no clear requirements in order to acquire the pension, and the fate of a claim depends on the judgement of each court. This research shows the need to retake the elements of the essence of the survivors' pension, such as the concepts of family and necessity, for this a legislative reform is required that supports the constitutionality tests and clearly draws a landscape that do not allow divergent and contrary understandings of law interpreters, in the search for legal security, equality, non-discrimination and true social security protection for survivors.