Mo. Const. art. V, § 3

The supreme court shall have exclusive appellate jurisdiction in all cases involving the validity of a treaty or statute of the United States, or of a statute or provision of the constitution of this state, the construction of the revenue laws of this state, the title to any state office and in all cases where the punishment imposed is death. The court of appeals shall have general appellate jurisdiction in all cases except those within the exclusive jurisdiction of the supreme court. [Effective - 02 Dec 1982 , see footnote]