12x23 All Along the Watchtower
First Aired: May. 18, 2017 on The CW
Summary: Lucifer battles Sam, Dean and Castiel for control of his unborn child. (Season Finale)
- The name of the episode comes from a famous Bob Dylan song.
- The Title of this episode "All Along the Watchtower", is a reference to the 1967 song (of the same title) by Bob Dylan. Although this is Dylan's song it's strongly identified with the interpretation The Jimi Hendrix Experience recorded.
- This episode confirms that the Supernatural series takes place on one earth of many in a multiverse
- SPOILER: Body count : 5
- Castiel uses the name James Novak (the name of his vessel).