S6·E18 Undercover

Carlos is working undercover. He is working on a ring of drug dealers, who are led by a man known as El Vaquero. When he witnesses the number two man, Johnny Primo kill someone and reports it to Walker, who says that they should take them down but Carlos wants to get El Vaquero because he believes that he was the one who killed his brother who was a junkie. Johnny has his fingerprints checked out and discovers that he is a cop. They grab Carlos and Johnny demands to know what he has told and when Carlos refuses to say anything Johnny beats him up. Carlos escapes and is taken in by a homeless man he met earlier. Trent and Walker are worried because he was suppose to come to the Karate tournament that Trent's gym is joining. They try to find him and the homeless man finds Trent and tells him where Carlos is. But a disgruntled member of the community, who was thrown out tells Primo's people where Carlos is and they tear the place apart and when they find Carlos, Johnny was about to kill h