Mo. Rev. Stat. § 513.385: Showing of reasonable ground for order required.

The order above provided for shall issue only in case it be made to appear to the court or judge, by affidavit or other evidence satisfactory to the court or judge, that there is reasonable ground to believe that such judgment debtor has property subject to execution, or has conveyed or attempted to convey his property, with a design to defraud, hinder or delay his creditors, such affidavit to be made to the best of the knowledge and belief of the affiant.