A court to which a petition for a writ of habeas corpus is presented shall forthwith grant the writ or issue an order directing the respondent to show cause why the writ should not be granted, unless it appears from the petition that the person restrained is not entitled thereto.
Mo. R. Civ. P. 91.05
Committee Note - 1983
The source is prior Rule 91.04.
The only procedural change is the addition of the federal practice of allowing the court to issue a show cause order so that it will not always be necessary to produce the person restrained at the commencement of the proceedings.
Compare: 28 U.S.C. Section 2243.