Rob Johnson, 44, and his wife, Marie Johnson, 43, from Port St. Lucie, Florida were on Tuesday, August 11 arrested for allegedly turning a 13-year-old girl into their sex slave. The couple took in the then 13-year-old girl to live with them after her mother died and locked her up for five years. All through the years of abuse, Rob Johnson held Sunday school classes for his family at their home, invoking Old Testament Bible Passages to justify their perversion. According to the Port St. Lucie Police Department, the teenager was told by the couple she could only stay if she had sex with them. The girl also told investigators that she was forced to call Rob “master,” and that Marie Johnson had pushed her against a wall and held her by her throat until she agreed to the meet their sexual demands. And when she failed to follow the couple's directions or complete her chores, she was severely beaten. The girl, who has not been identified said that the abuse happene...