Fairy Tail 239 see’s a connection between Silver and Gray as Natsu realises that they have very similar smells, on top of which Jellal and the Oracion Seis crew face off when Jellal powers up to trade better against them. Brain is changing into something more demonic. All while Elfman is being controlled by Seilah in order to blow up the whole guild.
Fairy Tail 238 discovers that Crawford Theme (or Seam), the former council leader was the one feeding the information back to Tartarus in order to once again become the head of the council. In turn he drugs Erza and Mirajane to bring them back to Tartarus HQ, whilst Natsu figures out that he’s the leak. Erza and Mirajane are put under tests and tortured.