Molly McNamara

Background
Fifteen years ago Molly McNamara and her husband David McNamara were driving along Highway 41 in Nevada when they hit and killed Jonah Greely Molly died but is unaware that she is dead.Each year on the anniversary of his death, Jonah finds another car driver to kill.

When Sam and Dean meet Molly, they don't tell her that she is dead, hoping she will help them find Jonah's remains. They find Greely's cabin, but Jonah grabs Molly and starts to torture her. Greely is dispatched when Sam salts and burns his corpse.

Finally the boys reveal to Molly that her husband is alive and she is dead. At last she accepts this and her spirit disappears with the sunrise.