"Hollis Walker, Jr."@en . "Professor Hollis Walker, Jr. is a serial killer who appeared in Season Six of Criminal Minds."@en . . . . . "Hollis Walker, Sr."@en . . "Male"@en . . . "Unnamed mother"@en . "c. 1977"@en . "Incarcerated"@en . . "Professor Hollis Walker, Jr. is a serial killer who appeared in Season Six of Criminal Minds."@en . "3"^^ . "Varied"@en . "College professor"@en . "Abductor"@en . "Hollis Walker"@en . "\"Coraz\u00F3n\""@en . "4"^^ . "Finger or hand removal"@en .