Wisconsin Statutes Actions and Proceedings in Special Cases (Ch. 775 to 788) § 782.14. Return, what to state

(1) Whether the prisoner is in the respondent's custody or power.

(2) If the prisoner is in the respondent's custody or power the authority and true cause of such imprisonment, setting forth the same at large.

(3) If the prisoner be detained by virtue of any written authority a copy thereof shall be annexed to the return and the original shall be produced to the court or judge before whom the same is returnable.

(4) If the respondent shall have had the prisoner in the respondent's power or custody at any time, but has transferred such custody to another, the return shall state particularly to whom, at what time, for what cause and by what authority such transfer took place. The return must be signed by the person making it and shall be verified by oath.