José Vargas, alias José Duarte, is the brother of the murder victim Maria Duarte. Bones and Booth finds a Mara Muerte tattoo on his neck and female remains in the trunk. They are asking questions when shots are heard and they are being shot at in a drive-by shooting. The shooters get away and so does the José. Later somewhere down by a hospital Jose is thrown out of a car, nearly beaten to death with a note on his chest addressed to Booth that says "Special delivery for Agent Seely Booth FBI". Jose was beaten by his own gang. They find out that the two bodies were his sister and his father by the hereditary disease. Jose tells them that their family name was Duarte and that his sister was named Maria and their father was Augustine.