Mo. Rev. Stat. § 622.430
Within thirty days after the application for a rehearing is denied, or, if the application is granted, then within thirty days after the rendition of the decision on rehearing, the applicant may apply to the circuit court of the county where the hearing was held or in which the division has its principal office for a writ of certiorari or review for the purpose of having the reasonableness or lawfulness of the original order or decision or the order or decision on rehearing inquired into or determined. The writ shall be made returnable not later than thirty days after the date of the issuance thereof, and shall direct the applicant to certify the division's record in the case to the court in conformity with any applicable court rules. On the return day the cause shall be heard by the circuit court, unless for a good cause shown the same be continued. No new or additional evidence may be introduced upon the hearing in the circuit court but the cause shall be heard by the court without the intervention of a jury on the evidence and exhibits introduced before the division and certified to by it. The division and each party to the action or proceeding before the division shall have the right to appear in the review proceedings. Upon the hearing the circuit court shall enter judgment either affirming or setting aside the order of the division under review. In case the order is reversed by reason of the division failing to receive testimony properly proffered, the court shall remand the cause to the division, with instructions to receive the testimony so proffered and rejected, and enter a new order based upon the evidence already taken, and such as it is directed to receive. The court may, in its discretion, remand any cause which is reversed by it to the division for further action. No court in this state, except the circuit courts to the extent herein specified and the supreme court or the court of appeals on appeal, shall have jurisdiction to review, reverse, correct or annul any order or decision of the division or to suspend or delay the executing or operation thereof, or to enjoin, restrain or interfere with the division in the performance of its official duties. The circuit courts of this state shall always be deemed open for the trial of suits brought to review the orders and decisions of the division as provided by law and the same shall be tried and determined as suits in equity.
§ 622.430, RSMo