Key Points
- The Vault Keys are required to unlock the vault at the Constable’s Guildhall basement.
- You will find the keys randomly while taking down the constables within the guildhall’s first and second floors.
- Use the help of the Vistara Diamond to track down the constable enemies and either pickpocket or take them down to get the keys.
With each area you discover in Thick as Thieves, you need to get the required keys to unlock them. The Vault Keys are one such key that could be an easy miss, especially if you don’t know where to look for them.
Read More: Thick As Thieves – How to Play Co-Op – TheGamesWatch
Thick as Thieves – Vault Keys Overview
| Loot area | Constable’s Guildhall |
| How to get | Looting constables in white suits |
| Where to use | At the basement of the guildhall |
How to Find the Vault Keys

Like most keys in the game, the only way you can get Vault Keys is by taking down the constables in your path. The best place I found where I could collect the Vault Keys was while exploring the Constable’s Guildhall. This will require you to progress through the game a bit more, but it is accessible early on.
Once you reach the upper floors (either the first or second floor) of the Constable’s Guildhall, look around for constables wearing a white uniform. One way that helped me figure out where these constables were was to listen to their distinct jangling while they walked around.

After that, sneak up on them and either perform a takedown or pickpocket them if they are standing still. You might have to take down several constables until one of them drops the Vault Keys. If you are still having a hard time, I would suggest using the abilities of the Vistara Diamond.
This will help track down all constables in the area on your map. Also, while checking your map, pay attention to the green question marks around various areas. These icons will point you in the direction of the quest objective. Also, you can shuffle between the map and the clues and read through them. Sometimes, you will get indicators on where you can find the vault keys.
How to Use the Vault Keys
As for using the Vault Keys, your next clue will show you that you need to head down to the basement. You can pick up this clue while exploring the upper floor of the Constable’s Guildhall. Then, uncover your map and make your way down to the lower floor of the Constable’s Guildhall, right to the basement. Over here, make your way to the area with the question marks to uncover the mystery of the vault and progress the game.
FAQs
I still can’t find the vault keys. What do I do?
It could be a bug, so restart the game and try looting the constables within the guild hall again.
Where can I find the Vistara Diamond?
You will get the Vistara Diamond during the early game tutorial missions; you can’t miss it.
Where can I find the clues about the vault keys?
You will find the clue notes while exploring the guildhall; you can’t miss them.

