The article deals with the issue of probable information about the crime of a clergyman contra mores, if such appeared in a trial for declaring a marriage null and void. Although the process for nullity of marriage does not directly concern the clergyman, it may turn out that the party indicates his sexual wounds from the past, where the perpetrator was the clergyman as evidence of the filed title for nullity of the marriage. The aim of the article is therefore to present the various possibilities and reactions of the judge to this type of news about the crime. These include persuading a person to report this fact to the appropriate ordinary, cooperation with the ecclesiastical superior, as well as the possibility of conducting a criminal trial as an incidental case.