Mo. Rev. Stat. § 461.076
The probate division of the circuit court may hear and determine questions and issue appropriate orders concerning the determination of the beneficiary who is entitled to receive a nonprobate transfer, the proper share of each beneficiary and any action to obtain the return of any money or property, or its value and earnings, improperly distributed to any person.
(L. 1989 H.B. 145 § 42, A.L. 1995 S.B. 116)