Ramos: Friend of Arthur, member of the Mexican Police.O-Bop: Friend of Sean Callan, Irish mobster.Gloria Barrera: Daughter of Adán and Lucia.Raúl Barrera: Younger brother of Adán, co-leader of the Barrera cartel.

Fabián 'El Tiburon' Martinez: Main hitman of Raúl Barrera.Jimmy Picone: Member of the Cimino crime family, acquaintance of Sean Callan and Sal Scachi.Sal Scachi: Former Colonel of the United States Army, now member of the Cimino crime family.Husband of Pilar and father of her children. Güero Méndez: Drug trafficker, first an ally, then an enemy of the Barrera family.Based on Cardinal Juan Jesus Posadas Ocampo. Juan Ocampo Parada: Cardinal, priest of the Barrera family.Don Miguel Angel 'Tío' Barrera: El Patrón, head of the drug trafficking organization.Sean Callan: Irish mobster and hitman for the Italian mafia.Professional lover of Adán and Jimmy Piccone. Based on Benjamín Arellano Félix, although Amado Carrillo Fuentes is 'The Lord of the Skies.' Barrera is also partly based on Joaquin 'El Chapo' Guzman. Adán Barrera: Nephew of Don Miguel Angel Barrera, brother of Raúl.Arthur 'Art' 'Arturo' Keller: DEA agent, participant in the Operation Condor, obsessed with hunting down the Barreras, and other people responsible for killing his friend.It also navigates through the inner workings of the drug trade and how different organizations collaborate to achieve their respective goals, from the Mexican drug cartels to the Vatican. Winslow's novel exposes the brutality of the war of drugs with graphic scenes of torture and massacres. The CIA prevents him from taking revenge on the drug cartels to combat left-wing activists in Latin America. Trying to avenge his colleague, Keller discovers massive involvement of the US and the Mexican governments in drug trade operations. Agent Keller becomes obsessed with the Barrera family after they torture and kill a DEA agent in Mexico. Winslow's novel describes three decades of the United States' war on drugs by following several main characters: The DEA agent Art Keller Adán Barrera, who controls large parts of the drug trade from Mexico to the United States of America the prostitute Nora Hayden and Sean Callan, a gangster from the streets of New York. The book was published after six years of writing and research by the author. The Power of the Dog is a 2005 crime/thriller novel by American writer Don Winslow, based on the DEA's involvement with the War on Drugs.

Power of the dog book don winslow