The Ritual of The Beast was a ritual organized by Dennis that resulted in the emergence of The Beast.
Background[]
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.
Battle[]
Enacting a sort of ritual. Kevin then buys flowers and visits a train car, before becoming 'the Beast'. Dissolving into an animalistic mentality, Kevin goes on a rampage.
Aftermath[]
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.