[X] The Left Closed Door, Upstairs. (On the other hand, this one feels promising; if this is their living space, you may just get a better idea of who -or what- these people truly are… Though whatever's on the other side of the door may be just as dangerous as it is enlightening.)
[X] The Right Open Door, Upstairs. (The office is sure to have important documents or the like, right? If you can snoop around there, you might be able to learn more about what the owners are really up to and their true goals here… If you have time to go through it all, that is.)