If you knock someone out, be sure to hide the body in a dark place well away from where any Keeper is likely to pass; it might get detected, even through a closed door, if the body is left too close to the door with the lights on inside.

I found a glyph in the attic, i frobed it, but i see no results, what does this glyph do?

But i´ve been in the library and read all books there, what i´ve i missed Larry?

"In this mission there is a money box which you can pick up, put down, and then unlock and open. File cabinets, dressers, and wardrobes have drawers you can open and look inside. Dresser drawers work like other containers, footlockers say. If anything is inside, when you frob to open them you get the contents, if any, in your inventory to inspect and decide whether to keep or discard. When you open wardrobe doors, wardrobes can have things hidden inside like a safe, or can give you their contents like a footlocker, or they can do both. File cabinets act like real world file cabinets. You have to open them to look at the files. The 1st frob opens the drawer selected. If there are contents that Garrett wants to read, the 2nd frob reads the files inside, otherwise it closes the drawer. If there were files inside, then the 3rd frob closes the drawer. File drawers can also act like containers, so a 1st frob may deliver an item into your inventory. Just because it does this does not mean there is nothing to read inside; that’s an independent issue. My suggestion is to always close file cabinet drawers after you open them."