Joseph Smith, Sr., is imprisoned because of a $14 debt owed to a Quaker. The man offers to forgive the Prophet's father if he will renounce the Book of Mormon, but he refuses. A mob threatens the home of Lucy Mack Smith, but she is saved when 19-year-old William returns and scares the mob away. Joseph, Sr., ends up spending 30 days in jail, but he preaches the gospel while there and converts two men.
[Conkling, Christopher J., Joseph Smith Chronology]