You reenter Kevin's room and approach him. "Is something happening?" Kevin looks to you worried, you look back at the door and get close to Kevin, whispering to him that there's an Irishman. Kevin looks shocked as you tell him this, he looks around the room in a panic "there's a backdoor in this room, I put the key somewhere, uh. I just need to find it!" He stands up and starts running to the different shelves in the room. Kevin's starting to make a lot of noise, the Irishmen has probably heard you now. You tell Kevin to quiet down and he realizes what he's done. With a look of horror he whimpers "I'm sorry, I ruined it for us..."
Kevin's down in the dumps and now an Irishman is about to enter. This isn't good.
"Whatever you plan, I'll follow. This is my fault now after all." Kevin looks at you expectantly, you quickly think up what you can do. You could take Kevin up on his offer and give him to the Irishmen while you look for the key. You could also play hero and try to distract the Irishmen, you're okay with your fists and you might be able to hold him off, but its a stretch. There's also the option of trying to hold the door on him and hoping Kevin can find the key.