Mission: Locate the source of the mysterious noises in the museum that are scaring off the guards.
Examine the hole in the wall. It is on the first floor of the museum.
It will unlock a hidden door.
Go down the hall, through the door, and down the stairs.
Pull the torch.
Push the statues onto the switches to open the door.
Examine the wall to open a hidden door.
Collect the treasure.
Pull the statue.
Examine the hole to unlock the door.
Nothing special in this room...
Go through the door.
There are 3 doors in this room. Only one is unlocked. Go through that one.
Collect the treasure from the chest.
I missed how this door is unlocked, but continue through the door to the immediate right. Leaving the room with the electric traps will open up a hidden door in that room leading to where you need to go to finish this mission.
Pull this statue out. It will make another floor switch appear.
Push the statue onto the floor switch to unlock the door.
Open the chest to make another floor switch appear.
Stand on the floor switch.
It unlocks this door.
When you enter this room and read the plaque on the wall, you will get another mission. ACCEPT THIS MISSION! Mourn the grave to open the hidden door. Examine the hole in the floor to retrieve the remains. How the man died and ended up in that tiny hole we may never know... Go down the stairs.
Collect the treasure. Go up the stairs.
Collect the treasure from the chest. Go up the stairs.
Use map view to find the graveyard. Examine the hole in the ground to unlock the middle room. Open the chest. Click and drag the remains from your inventory to the chest's inventory panel. Report in to your boss.