Are the Prom episodes the two young Danvers sisters episodes?
The phantom and lost souls episodes are intriguing.
Could rebirth be Brainy centric? Him coming back from near death possibly?
I'm sure the two Prom episodes are the young Danvers sisters episodes.We already knew Chyler was directing episode 6 and that this one would feature the young Danvers.There were rumors that they were also in two episodes.This seems to confirm that.
I'm spoiler hiding this speculation.
Episode 6 is called,"Prom Again! There were on location reports when this episode was filming involving if I remember, Nia & Brainy and interaction with the young Danvers.Given this title and it being the second part of a two parter from the sounds,I think episode 6 involves time travel.