Mo. Rev. Stat. § 521.540
Current with changes from the 2024 Legislative Session
In all suits by attachments, the court in which such suits are pending may, for the furtherance of justice, in its discretion, permit any person or persons who are creditors of the same defendant to appear in said suits on behalf of the defendant and make all such defenses as the defendant could make.
§ 521.540, RSMo
RSMo 1939 § 1493