Walker, politist texan

SINOPSIS

An undercover agent is killed by Jack Garrett, the man she was working on. Walker sends an informant to get him to incriminate himself but before he could someone tries to kill him. Walker stops him and discovers that he's the brother of the agent who was killed. He refuses to cooperate, insisting that this is between him and Garrett. Later he escapes with help from his brother and sister and tries to get Garrett. Walker tries to stop them.