Directed by Steve Boyum and written by Sera Gamble and Nancy Weiner.
Mary remembers Dean from his previous trip to 1973 (in the Season 4 episode "In the Beginning") and eventually learns that the two strangers protecting them are her own sons.
The episode concludes with Michael erasing Mary and John's memories of the events, ensuring the timeline remains intact and the Winchesters are born as planned. 5.13 The Song Remains the Same - Super-wiki
Directed by Steve Boyum and written by Sera Gamble and Nancy Weiner.
Mary remembers Dean from his previous trip to 1973 (in the Season 4 episode "In the Beginning") and eventually learns that the two strangers protecting them are her own sons.
The episode concludes with Michael erasing Mary and John's memories of the events, ensuring the timeline remains intact and the Winchesters are born as planned. 5.13 The Song Remains the Same - Super-wiki