Présentation de l'éditeur Gregorio and Manuel were best friends. They both had a tattoo of a night buffalo, which Gregorio insisted was done with the same needle, so their blood would mingle. Since Manuel started sleeping with Gregorio's girlfriend, the friendship had become increasingly difficult to live with. In the aftermath of Gregorio's suicide Manuel struggles to get his life back on track. Everyone seems to suspect him of knowing more than he lets on and everyone seems to be keeping their own secrets, including his girlfriend. Most disturbingly Gregorio appears to still be watching him, letters from him appear through the post, containing enigmatic messages, 'You won't be able to run from the night buffalo', they promise. Gregorio hadn't finished dying yet. From the acclaimed writer of "Amores Perros" and "21 Grams", this is the story of a passionate and destructive menage a trois and the tricks your mind can play on you. Biographie de l'auteur Guillermo Arriaga grew up in a violent neighbourhood in Mexico City. He lost his sense of smell at thirteen after being punched in the face too many times. He went to a liberal school where theatre studies was compulsory and by the time he was fifteen he'd acted, directed and produced around twenty or thirty plays. It was when he was recovering from a severe heart infection, which had been irritated by his boxing training, that he decided to become a writer.