Missouri First Interrogatories in Paternity of Custody Actions are questions posed by one party to the other regarding their legal rights and responsibilities in a paternity or custody action. The purpose of interrogatories is to obtain information from the opposing party that can be used to build a case or prepare for trial. The Missouri Supreme Court Rules of Civil Procedure requires that the responding party answer the interrogatories fully and truthfully. Types of Missouri First Interrogatories in Paternity of Custody Actions include questions about the parties' identity, information about the child, the relationship between the parties, financial matters regarding the child, and any other relevant information that could be used to determine legal rights and responsibilities.