https://en.wikipedia.org/wiki/Special_counsel
Terminating a special counsel investigation
Generally, the special counsel him or herself decides when an investigation will terminate, with or without formal charges being pursued. The special counsel typically issues a final report on their investigation at this time. The current special counsel regulations specify that[6] "At the conclusion of the Special Counsel's work, he or she shall provide the Attorney General with a confidential report explaining the prosecution or declination decisions reached by the Special Counsel."
Firing the special counsel
The current special counsel regulations specify that:[6]
The Special Counsel may be disciplined or removed from office only by the personal action of the Attorney General. The Attorney General may remove a Special Counsel for misconduct, dereliction of duty, incapacity, conflict of interest, or for other good cause, including violation of Departmental policies. The Attorney General shall inform the Special Counsel in writing of the specific reason for their removal.