Just a little theory, maybe the reason for Stein's rapid descent to madness is not only due to Asura's wavelength but also to that last attack from Medusa when they fought, that would also explain why he keeps seeing her everywhere.

As for the episode, kind of slow and i'm really getting tired of seeing Maka and Soul failing so much, those guys need a powerup asap ( and i hope it has something to do with the black blood )

In other news, i'm sick of this opening, get a new one!!