A/N: I realize this is hardly the best quality writing I've ever churned out and hardly the most detailed. But y'all, I am enjoying myself so much I don't even care.
"What?" Leon's head snapped up. "I'm what?"
"Sorry," Merlin said. "I'm very sorry. I had to tell her!"
"I'm not anything!"
"Don't deny it, Leon; it's too late!" Merlin shook his head melodramatically.
Morgana looked at Leon with confusion and then laughed. "Merlin, you are stalling. Leon isn't Emrys; I'm not a fool. Emrys is an old magical man. Leon is none of those things."
"I'm a man," argued Leon.
"Well, except that," she agreed, looking him up and down in a way that made Leon a teensy bit uncomfortable. "He's not Emrys."
"He's loyal to Camelot," Merlin argued. "And of course he'd hide magic, wouldn't he? He wouldn't want to get executed. And he could have bespelled himself to look old."
"Merlin!" Leon shouted. "I don't use magic!"
Morgana faltered. Merlin drove it home. "Besides," he said. "Emrys. It means 'immortal', doesn't it? Haven't you always wondered why Leon can't be killed? Not by a dragon, not by an attack… Because the Druids saved him, didn't they? Not even by immortal soldiers. Immortal. I'm telling you. He's Emrys."
That got her attention. Morgana turned to stare at Leon, completely missing Merlin's eyes glow gold as the sword to the knight's neck turned red hot. The man holding it of course dropped it with yell and stepped back, staring at his hand in pain.
"Run, Leon—I mean, Emrys!" Merlin shouted.
Leon did just that, heading down the hall like hell was after him.
Morgana turned to glare at Merlin.
"Well?" Merlin said. "After him!"
Morgana turned away. "Get him, men!" she screamed, and the whole lot of them went running down the hall after the escaping knight. Merlin winced.
The only one who paused was the one who held Merlin by the neck. He looked after them, not sure if he should run or remain. He glanced at Merlin indecisively.
"Seriously," Merlin said calmly. "Just chase after them before I kill you with one word."
That seemed to decide him. The man let go and ran after the others, screaming his belated battle cry.
Merlin nearly tumbled to the floor, but he straightened himself out and pulled on his shirt. He brushed himself off. Then he continued on his way down to the dungeons.
Leon went down the hall like a madman, sword out and waving as he heard the approaching horde of people behind him.
Turning a corner, he ran smack-dab into Tristan, stumbling a bit.
Tristan, who was also running with several men approaching, looked lost. "What's going on?" he nearly shouted.
"No talking!" Leon shouted, grabbing Tristan's arm and starting down a different hall, picking up his pace as the two groups of pursuers joined together. "Just run! I am going to kill Merlin!"
They ran.