orologio en CB01 OFFICIAL. The students at Riverdale Girls' Seminary, although typically well-behaved, care about public opinion and are upset when they learn that Mary Adair, whose father had been convicted of embezzlement, would be attending their school. Mary is shielded by Ruth Graham the most popular girl in school. She is slowly accepted but when she pledges a sorority she is required to spend the night in a “haunted house” and while there learns information that will clear her father.