A/N: Uther isn't one to be taken lightly.
Uther takes one look at the scene he has stepped into and knows he really, really should have asked one of the guards to find Arthur for him instead of wandering into…well, this.
Why did he insist on looking for his son himself? Why?
Knowing he really doesn't want to know the answer, he speaks the question anyway;
"What happened here?"
He's fairly proud of the stern authority behind the words when he honestly couldn't care less and all he wants to do is turn around and walk away. Then again, if he leaves this incident to fester it may end up culminating in an appearance in front of the court and he doesn't have the patience nor the time to allow that.
"He's a thief! I found this servant in the guest chambers you so graciously presented me, and I am certain he is guilty of stealing a family heirloom most precious to me!"
He lets his irritation seep fully into the gaze he levels at the hapless servant, arms restrained by two of Camelot's own guards. The nobleman is looking far too smug about the entire situation for the kings liking and he is completely willing to place the blame for what he says next on that infuriating expression.
"I distinctly remember ordering you to clean Lord Elrond's chambers yesterday!" the poor boy's head snaps up so quickly Uther is certain he might have given himself whiplash, "get back in there and finish the job this instant!"
The noble smoothly interrupts and from countless war meetings Uther can detect the slightest waver in his tone that hints at secrecy, "That won't be necessary, Sire, I'm sure I can do without any servants tending to me."
So the boy saw something he shouldn't have; no doubt he would share it with Arthur before long. He forced his tone to grow cold;
"Are you suggesting all of Camelot's subjects to be untrustworthy?"
To the man's credit, the flinch was only barely noticeable;
"Of course not my lord," he quickly assured, "but I have reason to believe-"
Uther quickly cut across Elrond, intending on making his point deadly clear to the arrogant boy who thought he could best kings.
"You are suggesting," he spoke slowly, "that Prince Arthur is incapable of choosing a subject of Camelot trustworthy enough to serve as his personal manservant."
When all colour began to drain from the young lord's face, Uther happily determined that realization had been reached. Turning his attention back to the guards who now seemed unsure of their purpose, Uther continued, interested at the look of shock that fled quickly from the servant.
"I wish to speak to Arthur in the throne room," when nobody moved, he tagged on "immediately," staring the guards down, daring them to disobey him. They instantly released his son's servant who hurriedly bowed and raced off as soon as he shot out a quick, "Yes, Sire."
After dismissing the guards and ignoring the stumbling apology and subsequent explanation from Elrond, he made his way back to the throne room, content to wait for Arthur to come to him like he should have done to begin with.
And when, several days later, Elrond was exposed in the act of trying to poison his only son and heir, Uther simply thanked Gaius for being able to supply the antidote so readily and conveniently, and chose not to linger on the sample of poison he had no doubt Merlin somehow procured.