DEXTER, Minn. - The Dexter parents who pleaded guilty to chaining one of their sons to his bed have been denied visitation rights. Thirty-three-year-old Brian Dale Miller and 26-year-old Charity Lynn Miller requested visitation with the younger of their two sons Friday. They both pleaded guilty earlier this month to gross misdemeanor false imprisonment. They were accused of chaining their 5-year-old son to his crib and withholding food and access to the bathroom from him and his 8-year-old brother.