There are a total of 5 Bone Charms to be collected in this mission.
#1) There is a Bone Charm located inside of the Whiskey Distillery area, with all of the Bottle Street Gang. It is inside of a locked door that's just to the left of the entrance to the main building. The key is located behind the door that is raised by a handle, which when released will make the door shut again. Hold the <Action Button> to raise the door, then quickly use Blink to get inside. The key is hanging on the wall inside of that room.
#2) When you start the mission and go to the right to meet the Bottle Street Gang, you might spot some Assassins up on the balconies nearby the Dunwall Whiskey Distillery. There are two Assassins in the rooms with the balconies, and the Bone Charm is located in the room that is highest.
#3) When you progress to the second area of the Distillery District, take the stairs on the left side down to the alley with the Weepers. Go to the right and you'll spot an opening that leads to a small room with Granny Rags. The stairs on the left side in this room leads to the back where Granny Rags is, with the Bone Charm on the stove.
#4) Once you finish the first side mission for Slackjaw, he will give you a key to the Captain's Chair Hotel. The entrance is in the last area of the Distillery District before The Golden Cat. Once you're inside, the Bone Charm can be found right next to the mattress on the ground, before going up the stairs.
#5) This Bone Charm is located inside of The Golden Cat and it requires the Master Key from Madam Prudence. She can be found in her office, and you can simply sneak up behind her and steal the key from her. Once you have the key, go up the stairs right outside her office and to the next floor. Use the key on the door there, and the Bone Charm will be above the fireplace.
