It seems that if I go upstairs and am considered trespassing, all of the party members crouch in fear and all of the guards know what I have done, even though I was never detected. Same thing goes for if a body is found downstairs. Somehow everybody immediatly knows it was me who killed them. This completely negates the point of going up to Boyle's room and finding out what can be used against her as she's cowering in fear and all of the guards will kill me on sight. Is this a bug or just a design flaw? Anybody else get this on any system? I'm currently playing PC. Also, I'm not sure if this would be a software issue or not so sorry if I posted in the wrong section.

I got that too only they weren't cowering in fear the first time. everyone was just going about their business and i possessed a rat to turn off the wall of light. when i came out of the room with the generator every one including the party guests was getting the alerted markers above their head. I thought that it could have been the fact that I had failed at the stealth up stairs and had to fight some guards. either way i just reloaded the mission made sure not to get detected upstairs and got through it just fine. im on the PS3 by the way

I went up there multiple times and still ended the mission without spoiling the party...I even carried my unconscious target down the stairs to the kitchen, meeting a guard on his way up...he drew his sword, but still let me pass without even saying a word...you have to be doing something wrong, like not sneaking or something...

No I was defiantly sneaking. in fact I played most of the game in sneak mode lol. Thing is, I did the whole posses rat and go downstairs to the whale oil closet and turn off the wall of light on my second time through, and when i came out of the room no one seemed to care this time. Personally I just think it was a minor glitch but it is in no way game breaking for me (seeing as i have beat the game lol.)

the first time I reached the place everyone were terrified already even outside and I couldn't go in by normal means maybe had to do with smacking (non-lethal) the guards outside and one of em finding one unconscious. Same happened inside, I smacked the guard in the basemant and left him in a corner and withing like 20 seconds of my last save a maid used to freak out in her rounds seeing it messing up the entire thing so yeah don't let anyone see even a single unconscious body or you doing anything stupid

None of that happened to me at all. Maybe it's a glitch?

Sorry to bump this, but in my current playthrough I have the second part of this. I've gone upstairs and all seems fine, but if I kill someone downstairs (undetected) EVERYONE knows it was me once the body is found. This is really ruining it for me at the moment I might rush to the end and restart the mission.