Anchor: John rattled the handle of Mrs. Inglethorp's door violently, but with no effect. 
Entailed: The door wouldn't open even after John rattled the handle rather violently.
Contradiction: John kicked open Mrs. Inglethorp's door.
Contradiction: A woman is afraid of the chainsaw.
Contradiction: The girl is young
Contradiction: a girl in black is looking away from the camera
Contradiction: In this situation 'upstairs' refers to the 9th floor and that's where his pad was.