Looking for the title of an old B&W movie?

It's about a man who was sent to prison after someone set him up. After he got out, he opened a store but he dressed as an old woman so that no one would know who he was. He had some kind of potion or powder that shrank people and he used it on a guy that was helping him kill who set him up. At the end, he met with his daughter - or maybe it was the guy his daughter was going to marry, can't remember for sure - on top of a building. He pretended to be a lawyer or something and gave her some money or a trust or something like that.