"Yeah, this certainly feels like it confirms our theory." Despite offering to do this, Merton isn't exactly wearing a brave face about it. He's been keeping behind Hiccup through most of it and letting him and Toothless take the lead.

At the suggestion that they knock, he thinks it over for a second and shrugs.

"Suppose it is his house, so, couldn't hurt." In a rare moment of taking the initiative, he steps up next to Toothless and gives the door a knock before quickly backing up to stand just behind Hiccup again.