Detective Stanley O'Farrell was an officer of the Old City Police Department.
However, the Sanctuary team soon found out about his deception, and laid a trap to get to O'Farrell, using Stephano as bait. However, when Bigfoot overwhelmed and confronted the policeman, he suddenly died.
Helen Magnus later discovered that O'Farrell died of a sudden brain aneurysm. However, the Sanctuary Network eventually obtained his full autopsy report from the Tartarus network through FBI agent Abby Corigan; it showed that O'Farrell had actually been killed by Harper mites, and led them to Clark.