Troy Squire was killed by the ghost of Constance Welch.
Season 1
He stopped to pick her up when he saw her on the side of the road and, because he planned to be unfaithful to his girlfriend, Amy Hein, with her, Constance led him to her old home and then when he tried to escape, killed him on the same bridge that she jumped from to commit suicide. His car is a VW Golf.