El Búfalo de la Noche is a 2007

2007 in film

This is a list of major films released in 2007.-Top grossing films:Please note that following the tradition of the English-language film industry, these are the top grossing films that were first released in the USA in 2007...

 film directed by Jorge Hernandez Aldana and based on the novel by the same name

The Night Buffalo

The Night Buffalo is a novel by Guillermo Arriaga.-Plot summary:After Gregorio commits suicide, his friend Manuel finds himself unraveling his late friend’s world, and what led him to suicide. Gregorio’s tortuous relationship with his girlfriend is now inherited by Manuel; he becomes involved...

 written by Guillermo Arriaga

Guillermo Arriaga

Guillermo Arriaga Jordán is a Mexican author, screenwriter, director and producer. Self-defined as “a hunter who works as a writer,” he authored Amores Perros, received a BAFTA Best Screenplay nomination for 21 Grams, and received the 2005 Cannes Best Screenplay Award for The Three Burials of...

. It is based on the novel by Guillermo Arriaga and stars Diego Luna

Diego Luna

Diego Luna is a Mexican actor known for his childhood telenovela work, a starring role in the film Y tu mamá también, and supporting roles in American films. He is also known for his roles in Rudo y Cursi and Milk. Luna also had minor roles in Frida and Before Night Falls...

. It was released in Mexico

Mexico

The United Mexican States , commonly known as Mexico , is a federal constitutional republic in North America. It is bordered on the north by the United States; on the south and west by the Pacific Ocean; on the southeast by Guatemala, Belize, and the Caribbean Sea; and on the east by the Gulf of...

 on August 17, 2007. The U.S. release date was April 14, 2009.

The story revolves around a young schizophrenic man, Gregorio (Gabriel González) who commits suicide, affecting the lives of his girlfriend (Liz Gallardo) and best friend (Diego Luna

Diego Luna

Diego Luna is a Mexican actor known for his childhood telenovela work, a starring role in the film Y tu mamá también, and supporting roles in American films. He is also known for his roles in Rudo y Cursi and Milk. Luna also had minor roles in Frida and Before Night Falls...

), who were involved in a secret relationship, betraying Gregorio's trust and inevitably becoming affected by guilt when Gregorio kills himself.
It follows the plotline of the book

The Night Buffalo

The Night Buffalo is a novel by Guillermo Arriaga.-Plot summary:After Gregorio commits suicide, his friend Manuel finds himself unraveling his late friend’s world, and what led him to suicide. Gregorio’s tortuous relationship with his girlfriend is now inherited by Manuel; he becomes involved...

, structuring it in a much more cinematic manner.