Mont. Code Ann. § 46-18-308

The judgment of conviction and sentence of death are subject to automatic review by the supreme court of Montana within 60 days after certification by the sentencing court of the entire record unless the time is extended by the supreme court for good cause shown. The review by the supreme court has priority over all other cases and shall be heard in accordance with rules promulgated by the supreme court. The sentence review shall be in addition to direct appeal, if taken, and the review and appeal shall be consolidated for consideration.