Oboeteiru

A malevolent being known as The Jester terrorizes the inhabitants of a small town on Halloween night, including two estranged sisters who must come together to find a way to defeat this evil entity.

A woman recovering from a nervous breakdown tries to convince her husband and and the local London police that she has witnessed a murder in the abandoned house next door.

A woman is sent to a mental institution after stabbing her classmate in an attempt to conjure an evil spirit called, Mercy Black. Fifteen years later she's released, and must save her nephew, who has become obsessed with the phenomenon.

Takashi Shimizu's newest film is about a mysterious cassette tape containing a melody. People who hear this melody gradually begin to hum it themselves and become involved in a mysterious incident. What is the mystery behind this melody ?