The Talmudic examples of Sanhedrin executions are numerous, but none brings a full documentary of the process, only the fact that someone was executed. That raises a lot of questions about the exact procedure - like where do the witnesses go first, is there a secretariat? Is there a physical file and where it's kept? Who's exactly prosecuting - who represents the "state"? And many more.
The Talmud (that was written long after the Sanhedrin of נפשות was dismissed) deals only with theoretical Halachic questions, that are hard to reconcile in a consistent process.
Is there a source (maybe external) for a fully documented Sanhedrin trial from the beginning to the end?