Hermione finds mention of Tom Riddle only as it relates to Marion's brother, a member of Riddle’s close circle of Slytherins. She nearly drops the diary as she discovers an entry describing the opening of the chamber of secrets and the subsequent death of Myrtle Warren. The young woman doesn’t appear to make a connection between the mysterious injuries (Hermione shivers as she remembers her own experience as a child) and the death. Marion, and the students at Hogwarts, were led to believe that Myrtle had taken her own life, as a result of anguish at her own heritage and the bullying she experienced. 