The Singer and Dabb era covers Season 12 through Season 14 when Andrew Dabb became co-showrunner with Robert Singer following the departure of Jeremy Carver.

This era introduces a new central character, the nephilim Jack Kline, son of Lucifer. Having the potential to surpass the powers of an archangel, Jack's existence has caught the attention of different organizations, major powers, and, even beings from alternate realities and dimensions. Sam, Dean and Castiel took Jack under their wing, fending off multiple enemies while also ensuring Jack learns to control his powers and use them for good.

If Season 12 was about children coming to terms with their moms as adults, then Season 13 is very much about Sam and Dean as parents.
— Andrew Dabb [1]
What's bigger than God? The answer is nothing. So after we did that, it was really about new directions that we could take our characters that will give them new things to react to? This opens up a lot of storytelling ideas in that way.
— Andrew Dabb on the alternate universe in Season 13 [2]
I think Season 14 is going to be a little less broad in scope and a little more emotional, more personal stories about the guys.
— Robert Singer on Season 14 [3]
Firstly, we would like to thank all the people who have been involved with the show both in front of and behind the camera. For us it has been an experience of a lifetime. The support we have had from both Warner Bros Television and The CW has been incredible. We'd like to give special thanks to Jensen, Jared and Misha for making this journey so special. It is now most important to us to give these characters that we love the send off they deserve.
— Robert Singer and Andrew Dabb on the final season[4]


Season 12

Sam is captured by Lady Toni Bevell, a rogue operative of the British Men of Letters.

Season 13

Sam and Dean deal with the fall out of Jack's birth, Castiel's death, and Mary being lost in the Apocalypse World.

Season 14

Sam and Castiel deal with Dean becoming Alternate Michael's vessel. Castiel helps a powerless Jack.

Season 15

Sam, Dean and Castiel deal with the repercussions of pissing off God and the death of Jack.







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