Angels and solitary people. As every black novel which is appreciated, this narration is a deep and sharp criticism to the hidden powers which erode the socio-political system anywhere. This novel is read in one go because of its narrative agility, the good use of the dialogue, its sense of humour, the subtle irony and above all, for Heredia the detective´s characteristics; a character who is the closest to the anti-hero and who was created by the author. He appears in some of his novels. Díaz Eterovic manages to capture the image of loneliness and the marginal spaces, of the anonymous beings who live and saunter in the asphysiating atmosphere in the big cities, the power corruption, injustice, violence, insecurity, fear. These elements are common anywhere.