Lucius Vulso (45.9, -5.25) is thinking about robbing the bank in Stonestair Byway. He will reward you with a 4 slot container if you would do the casing for him.
Head to Stonestair Byway and speak to Banker Kaman. He can be coerced in to telling you the weakness of the vault.
Then return to Lucius Vuso for your reward.