Mo. Rev. Stat. § 545.415: Criminal cases, prosecutors and circuit attorneys may take depositions of any person, procedure — prisoners deposed, where.

Beginning July 1, 1995, a prosecuting or circuit attorney in any criminal case pending in any court may obtain the deposition of any person on oral examination. The manner of taking such depositions shall be governed by the rules relating to the taking of depositions in civil actions. The depositions of any person confined in prison shall be taken where such person is confined.