Talked to the mercenary Jericho in Megaton,type up anything,he told me that there is a key to the Cabinet Moriarty and there is no money to measure,well found the key and where is the office and a stash of money?? The key to the Cabinet Moriarty (name)
About Moriarty can be read here http://ru.fallout.wikia.com/wiki/%D0%9A%D0%BE%D0%BB%D0%B8%D0%BD_%D0%9C%D0%BE%D1%80%D0%B8%D0%B0%D1%80%D1%82%D0%B8 There is the head - stock, passing through the links you will find the description about the key.
