Terry O'Quinn. Actor: Lost. Terrance Quinn (born July 15, 1952), known professionally as Terry O'Quinn, is an American actor. He played John Locke on the TV series Lost (2004), the title role in Kill, Daddy, Kill! (1987) and Stepfather II (1989), and Peter Watts in Millennium: Fürchte deinen Nächsten wie dich selbst (1996), which ran for three seasons (1996-1999). He has also hosted Mysteries of The Missing on The Science...