how do you steal the morgue key from the guard in that one room without being spotted? do you hang from the catwalk and then jump on him? ive tried that and everytime i do that im spotted and quickly and easily gunned down. PLEASE HELP!!!

i dont know, im stuck on that also, if u find out please tell me

I'll answer this one.
Remember the new gadget you took with you on this mission? The gun shaped device interferes with electronic equipment when it shoots out a surge of energy.
When you enter this room' didn't you find it a bit odd that the camera focused on the radio?
When you think you're in position, use the gadget on his radio, and it'll fry. The guard should approach it because he wants to try and see what went wrong.
I'll leave the method of attack up to you.
I hope this helped. See ya.

Respectfully,
Tomas K.