"Joe Keller"@en . . "(alias:) Lazarus"@en . . "Joseph \"Joe\" Keller Jr."@en . "Joseph \"Joe\" Keller Jr. is a serial killer introduced in the final three episodes of The Mentalist. Known by others as \"Lazarus\", he is a highly superstitious psychopath who murdered over ten people and stole their blood to perform blood magic."@en . . . . "Alive"@en . . . . . . "250"^^ . . . "Byzantium"@en . . "Joe Keller"@en . "Joseph \"Joe\" Keller Jr. is a serial killer introduced in the final three episodes of The Mentalist. Known by others as \"Lazarus\", he is a highly superstitious psychopath who murdered over ten people and stole their blood to perform blood magic."@en . . "Exterminator"@en . "Joseph Keller Sr."@en .