Mo. Rev. Stat. § 141.1009
2. Prior to the filing of an action to quiet title the land bank agency shall conduct an examination of title to determine the identity of any and all persons and entities possessing a claim or interest in or to the real property. Service of the petition to quiet title shall be provided to all such interested parties by the following methods:
(L. 2012 H.B. 1659 & 1116)