When Dr. Fletcher approaches and tries to reason with Kevin, she realises that he has kidnapped the girls and tries to convince him that what he is doing is wrong. 'Dennis' drugs her and locks her up.
When she recovers, Dr. Fletcher writes down Kevin's full name, knowing that it will be the singular way of subduing him once he transforms into the Beast. The girls, in the meantime, try to escape from their confinements.
Returning to his hideout, 'the Beast' confronts Dr. Fletcher. She tries stabbing him with a knife, but the knife shatters. The Beast then murders her, demonstrating incredible physical strength. He then proceeds to savagely kill Marcia and then Claire, while Casey stumbles upon Dr. Fletcher's corpse as well as her instructional note.