Stuart and Isaac
It was freakish, and Isaac couldn't help the fact that he didn't trust him one tiny bit because of it. Yeah, maybe it wasn't fair. He'd admit that. But it didn't change anything. The guy looked like Stiles, so Isaac's visceral reaction was...to treat him like Stiles.
And Isaac didn't like Stiles.
"Yeah, well, it's creepy. And you two have to be related somehow, I don't care what you say."