[1] Debbie Strand is a beautiful psychopath who escapes from the mental institution she was sent off to in the first installment of the series when a female orderly tires to sexually assault her.

There, Debbie instantly develops a psychotic crush on her dashing writing professor, Dr. Sam Deckner after being impressed by their shared interests as well as his personality on their first interaction.

Debbie assumed the role of a wealthy man's daughter while going by the deceased girl's name "Tracy Carlay" as her new identity.

Further interactions with Sam renders Debbie further psychotic, and, in order to strengthen their love, she soon begins killing anyone who she believes served as a threat to their perceived relationship.

Debbie, out of jealousy, throws a stone at the glass window while the couple were getting intimate and prompted a police inquiry.