That night when they stopped to rest, Merlin heard the call of Kilgarrah echoing across the valley, he looked over to Arthur worriedly but thankfully the King hadn't woken up.
"What is it?" He asked worriedly when he met with the Great Dragon a small ways away from their campsite.
"What have you gone young warlock?"
Merlin was confused, "What do you mean, what have I done?"
The dragon huffed slightly, smoke pouring from his nostrils. "Since you first arrived in Camelot the future has been crystal clear, now everything is murky as though everything that you have already achieved is at a tipping point and there's no longer any clear side that it's going to fall down on."
Merlin shrugged defeatedly, "Arthur has gotten it into his head that Morgana can be saved, I don't know what to do other than go with him and keep him safe."
Kilgarrah growled furiously, "Merlin! You cannot let the witch disrupt Arthur's destiny. At the first chance you get you must end her life!"
Merlin's eyes dropped to the ground and he turned and walked away without another word. He had already suspected what he might have to do, but the confirmation did nothing to relieve the guilt that was already plaguing his mind.
He didn't sleep any more that night, having a pot of stew ready for Arthur's breakfast when he woke up.
"How much further do you think?" He asked Arthur as they ate.
"I have no idea." Arthur murmured tiredly, realising that they really had no way of finding Morgana if she didn't want to be found.
"Well I do." Their eyes snapped open to see an equally tired looking Morgana leaning against a tree less than a hundred yards away.
She pointed over their shoulder, "Two miles that way, drop into the valley and then take a right at the boulder that's shaped like a griffin."
When they turned back towards her she had disappeared.
"We can't go Arthur." Merlin immediately said, "There's no way this isn't a trap."
Arthur stared off in the direction she had pointed them in, "I don't think so Merlin, I think she's testing us."
Merlin stared as though Arthur had grown another head, "Are you serious? Do you hear yourself right now?"
Arthur fixed Merlin with a glare, "Merlin I consider you a friend but I am still your King and if I say that we're going then that's what will happen!"
They sat in an uncomfortable silence for a while until Arthur cleared his throat, "I'm sorry, given everything that Morgana has done in the past it is wrong for me to try and order you to come with me. I'll understand if you want to go back."
Merlin shook his head, "For better or for worse, I'll always follow you Arthur."