“Under the law granting him legal authority (28 CFR 600), a special counsel is charged with investigating crimes. Only crimes. Nothing else. He has limited jurisdiction. Any other wrongdoing uncovered in the investigation which does not rise to the level of a criminal offense cannot even be made public by the special counsel. That is the law.
“So what crime is Mueller instructed to investigate? Let take a look.”
So, a good starting point might be common street crime in one of DC's better neighborhoods at ten after four in the morning, to wit, two shots in the back, resulting in death in a DC hospital at 0557.
No discernible motive: the vic's wallet and phone were still on him, as well as a necklace valued at $2k.
Murder I, especially for hire, rises to the level of a criminal offense.