Sanhedrin 73: To Prevent the Sinner from Sinning
A new mishnah! When a person who is committing a crime can be killed - and what kind of crimes warrant putting such a person to death before he can commit the crime. With sources from the Torah to derive the cases. Also, the many sins that one can save another from sinning by killing him - take his life in order to save him. But not every sin! With rape, even of the betrothed young woman as a complicated case.