He feels an open summons and lets it grab him -
A bystander has noticed Cam. There's an obviously noble person dressed in nondescript black clothing, and he's lurking. And there's a black knight attacking the king.
Cam now has a dagger coming toward his throat.
Then he grins in the shadow of his hood, as he is slightly scratched, barely enough to bleed.
Then his attacker falls asleep.
Meanwhile, Hank has abandoned his ominous and indomitable act to run after the king. It is neither dignified nor effective.
Cam knocks the king over for Hank. He decides to try not knocking out the people who have weapons aimed at him. He just smiles faintly.
Hank has no idea whether Cam can put everyone to sleep at once. He stretches out an arm in case anyone is still fooled by the ruse and shouts "flashbang!"
Only two people in the room knew to expect it. Hank grabs the king and runs—well, staggers—for the door. The helmet was better than a complete lack of protection. "There's more of them!" he tries to say. He has no idea whether or not he's actually speaking. "Incoming from our right."
Cam sighs. He sleep-drugs everybody present besides himself and Hank, and waits for Hank's hearing to come back.
It eventually does. "That could have gone better," Hank understates. "Let's get out of here before it happens again."
"Yeah. I could have knocked them out but you weren't paying attention to them right then and it would have been too obvious I was doing it. As-is they could come up with some other reason I was indestructible and assume the first guy triggered some kind of backlash."
"Any mistake is better than none. At least nobody here was also at the angel incident; we're too far and across too many borders. So your face wasn't recognized at least."
"There's the hood. And my angel persona didn't have to demonstrate my indestructibility, thank goodness. Should I change my hair color? I could do my eyes too, or for that matter my skin, but they'd be harder to put back than hair."
"Attention is more of a risk than recognition; the other destination is even further from the arch. Can you make yourself look sicklier? That's probably what stands out the most; you don't look like you've ever been malnourished or deathly ill."
"Uh, not easily. I could get rid of a few teeth, I guess, fill my gums with Novocaine and yank and put them back later? Put some shadow under my cheekbones and eyes, maybe, but that'd be literally makeup and I'm not actually any good at makeup."
"It probably won't matter. We can just start by having the black knight knock out a random bystander, so it won't look out of place if he gestures toward someone who threatens you. And I'll know to keep an eye out this time."
"Still pulsing. I vote we take him with us; we're closer to Ireland than Camelot right now."
"Okay." Cam takes off and heads Irelandward. "When we land again I'm going to need to replace my nondescript black outfit, it's got sword slashes all over it."
I don't actually know where this last king is going to be. His castle is said to be near Brú na Bóinne, and that's a collection of standing stones that we could probably see from space, but where he is might or might not be obvious from there.
Britons aren't much for foreign geography, unfortunately."
"Well, we'll see what we can see, but if it takes too long we need to get this king squirreled away or there start to be side effects."
"If it's not immediately visible, we can ask for directions. Politely and/or terrifyingly."
"Oh, now that's just evil. You don't see me quoting Brittonic epics you've never heard of. Well, mostly because current Brittonic epics aren't any good. But the point stands!"
"If you did it I could likely just make them. I'll make you the book I quoted if you like. Actually, I'm not positive the line's in the book, it might just be the movies, but I can make you those too. But right now we're busy."