Mather understood that catching Glover presented an exceptional opportunity. Like modern doctors who try to halt the course of a contagious disease by tracing the contact history of a person who is carrying it, ministers would question witches to learn more about the devil and any others he may have converted to his ways. Mather went to visit Glover in jail to question her, and she admitted meeting her prince, the devil, and four others. Mather prayed with her, and he was gratified to report that though she had resisted at first, she wound up thanking him.