This was so awful. What was the point of baby Lucifer and the Alternative Universe? How are they in any way connected? Is he gonna go there? Why is his name Jack? REALLY? JACK? I still can't get over how utterly stupid Kelly was "I won't be there to teach him to ride a bike" Um, he's the devil's son, he's not gonna be riding any bikes or performing in school plays.
Of course the worst part was Cas's anti-climatic, out of nowhere death (which better not be permanent, he was the only reason I watched through this season. The BMOL was so boring and I could care less about Mary)