Every attorney knows that there are hazards in real estate titles, which cannot possibly be discovered with even the most diligent search of the public records. For instance, the attorney cannot be sure: that the marital rights of all previous owners have been properly relinquished; that all mortgages, judgments, etc., affecting the property have been properly indexed in the record room; that all signatures on all recorded documents are genuine; that no unknown heir of a former owner can appear to assert his or her claim. These are but a few of the matters that can crop up to defeat real estate titles. Among others are such circumstances as fraud, duress, infancy, insanity, false presentations, etc.