"Mmm..." Scar grumbled, poking his head in and out of isles. It had to be along the wall, they knew that much. There were rooms direction above them, which meant that there wasn't any space for a trapdoor to come out of the ceiling.

"Start with the walls. There are rooms above here, so there will not be anything coming directly out of the center of the ceiling. If anything, it will most likely be toward the back." Closer to the edge of the building itself. He tried to remember if he had seen any sign of a staircase from the outside, but the courtyard wasn't a good enough vantage point to the Institute's east-facing facade to have seen anything.