This episode has everyone splitting off in different directions. I will start with what’s the most important to the plot though not necessarily on everyone’s high priority list. Because Salem.
John is definitely worried about this, having dispensed with bizarre plot distraction Bob, has returned to town, got patched up by the serial killer/cannibal/barber/meat pie vendor and warns Hathorne that the French of weapons of mass destruction. So basically all the defences of Salem are pretty much moot and what he needs to do now is set up defenders long outside of town so any big explosions are happening waaay in the countryside.
Since this seems to be the extent of his plans, it’s perhaps reassuring that the French are not even remotely involved in the blowing-up-Salem plan (what, another plot which is going to be abandoned?) and it’s actually going to come from inside the town: or so says Sebastian to Mary
And why is he telling Mary? Because while other people really really really want to stop Salem being annihilated Sebastian is busy pulling petals off posies “she loves me, she loves me not, she loves me, she loves me not” and mooning after Mary while disturbingly feeding blood to his zombie mother. He demands Mary love him while Mary asks him to please please please focus on the evil demon child who wants to destroy the world, Sebastien is far more concerned by the fact she loves John Alden and he’s totally jealous and it’s so unfair.
Sebastian, go write some sad poetry and take up moping already.
Mary tries kissing him but eventually has to have sex with him in front of John’s magically frozen self to prove to Sebastian that she totally wants him honest. This whole thing reeks of rape, Sebastian is basically ransoming the entire town’s (the town Mary can’t leave) future if she doesn’t sleep with him. But hey this creepy slimy rapist got her some pretty gowns guys
Baroness Marburg is still a zombie but she assures Sebastian she can totally handle Baby Devil. Lucy Lawless, save us!
Mary and John do use Tituba to have a reunion, lots of declarations of love with Mary laying down lots of epic lines about how she is damn powerful and awesome and totally doesn’t need her powers to be the strongest damn woman on the planet. I feel she needs to borrow Isaac’s waif to scream “You Go Girl!” in the background.
We also learn a little about magic – namely that the Essex Witches and their magic and their big epic tree has nothing to do with the devil or demons or anything – it’s Women’s magic, natural magic and my gods WHY has no-one mentioned this before in 3 seasons? And are we going to talk about how this natural magic is happy to embrace demon contracts? Does this change how power is expressed? What does this mean! You waited until season 3 for this, Salem
Anyway the actual point of this awesome bit of world building is that Mary is still bound to Salem so she just can’t run away with John and abandon everyone to fiery doom.