|Location||Cape Girardeau, Missouri|
|Episode(s)||1.13 Route 666|
In 1963 Mrs. Robinson was dating a man named Cyrus Dorian, while secretly seeing Martin Robinson, as interracial couples were ostracized in 1963. After leaving Cyrus for Martin, Cyrus grew enraged and rumors began of a truck picking up men of color who are then never seen again. The attacks culminated in a crazed Cyrus setting fire to the town's church, where his ex girlfriend and Martin were to be married, killing the children's choir inside. Later Cyrus would come after Martin, and severely beat him, however Martin was able to free himself and proceeded to beat Cyrus to death. Along with his friends, Clayton Soames and Jimmy Anderson, he disposed of the body and truck in the swamp, while a young deputy, Harold Todd, who discovered their actions, covered for them because of Cyrus's crimes.
When Clayton Soames and Martin Robinson is killed, Martin's daughter Cassie calls on Dean and Sam for help in finding out what happened. The investigation leads them to Cyrus Dorian and eventually Cassie's mother, who tells them the story behind Cyrus' death.
Mrs. Robinson protected the secret of what Martin and his friends did, as well as Harold Todd's cover-up for over 40 years.