Asmodeus opened a portal for Arad and everyone to leave hell, that one led them straight to Arad's castle in Alina. He did ask how in hell she knew the location of his castle and was able to create a gate there. All she replied with was that she can sense all devils that travel out of hell, so she had seen at least the devil locked inside Sara's necklace be summoned by Merlin.
Returning to the castle wasn't anything like what Arad expected. The whole castle was still calm, but stress seemed to be spreading through everyone like a plague. Merlin knew they were alive because her devil was alive, Eris knew Arad was alive because of their blood link, and she even knew that Sara was alive because she had left a life candle in Alina, in the lord's mansion where she lived.
