. "Richard Keats"@en . "Richard Keats (b. April 8, 1964) portrays Doctor Lockhart in Arrow and Doctor in Smallville."@en . "Richard Keats"@en . "Richard Keats (b. April 8, 1964) portrays Doctor Lockhart in Arrow and Doctor in Smallville."@en . "Richard Keats (born April 8, 1964) is an American actor. He portrayed Lockhart in a guest starring role in the first and second seasons of Arrow."@en . "Don"@en . . . . "Minneapolis, Minnesota, USA"@en . "Male"@en . "Doctor"@en . . "1964-04-08"^^ . . "1964-04-08"^^ . . . "Minneapolis, Minnesota, USA"@en . "Richard Keats"@en . . "Richard Keats (born April 8, 1964) is an American actor. He portrayed Lockhart in a guest starring role in the first and second seasons of Arrow."@en . "Arrow"@en . . . . . "\"Concentrate and Ask Again\""@en . "1964-04-08"^^ . . . "Richard Keats"@en . . "Richard Keats is an actor who plays Don on Fringe."@en . "Richard Keats"@en . . . "Richard Keats is an actor who plays Don on Fringe."@en .