Mo. Rev. Stat. § 511.210
Current with changes from the 2023 Legislative Session
The petition of defendant shall be served on the plaintiff in the judgment or notice given by publication to him, or, if the plaintiff be dead, then on or to his legal representatives, in like time and manner as provided for the service or giving of notice in case of an original petition upon a defendant.
§ 511.210, RSMo
RSMo 1939 § 1251