Mo. Rev. Stat. § 443.190
Current with changes from the 2023 Legislative Session
All mortgagees of real estate or persons holding security interests in personal estate, including leasehold interests, when the debt or damages secured amount to fifty dollars or more, may file a petition in the office of the circuit court against the mortgagor or the debtor and the actual tenants or occupiers of the real estate, or persons in possession of personal property, setting forth the substance of the mortgage deed or security agreement, and praying that judgment may be rendered for the debt or damages, and that the equity of redemption may be foreclosed, and the mortgaged property or collateral sold to satisfy the amount due.
§ 443.190, RSMo
RSMo 1939 § 3447, A.L. 1965 p. 114