This is a very long document (it's a dissertation) but the opening pages noting that Ptolemaic Egypt had a police force, in direct contrast to many other cultures in antiquity, is fascinating.

I've read of something else it mentions, that dealing with issues was often down to prosecutors (something we'd today expect to lead to miscarriages of justice) or the wronged person (ditto.) That seems a nightmare of potential for false accusations, especially among people with different economic statuses.