"There HAS to be some way to the upper floor." Victor grumbled, looking around. "Alright, gentlemen, we are going to turn this place upside down. Stay nearby to help me move furniture. We're going to scour every inch of this place!"

Victor proceeds to search very thoroughly for secret passages, not hesitating to move furniture out of the way.
(ooc) I would argue that my Engineering skill should provide synergy in this sort of endeavor. Just sayin'!