[s12e4] Goodbye Fergus Official

While there is no episode officially titled "Goodbye Fergus," that phrase refers to the character (whose human name was Fergus). If you are looking for a key moment where a character says "Goodbye, Fergus," it occurs later in Season 12, Episode 13, "Family Feud," when his son, Gavin MacLeod, chooses to return to his own time to die, effectively saying a permanent farewell to his father. [S12E04] " American Nightmare " Summary

The brothers encounter the Petersons, a devout religious family living off the grid. [S12E4] Goodbye Fergus

The fourth episode of Supernatural Season 12 is actually titled . While there is no episode officially titled "Goodbye

Sam helps Magda realize she isn't evil. However, after she is sent away for her safety, she is assassinated by Mr. Ketch of the British Men of Letters. The fourth episode of Supernatural Season 12 is

Dean struggles with his mother Mary’s decision to leave and take some space for herself. "Supernatural" American Nightmare (TV Episode 2016) - IMDb

In this episode, Sam and Dean investigate a series of mysterious deaths involving in Iowa.

They discover the family is hiding their daughter, Magda , in the basement. Magda has psychic abilities and her mother, Gail, believes she is possessed by the devil and forces her to self-flagellate.