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[Source 3]

Plot:
Karen Davis, an exchange student working in Tokyo, covers for a disappeared nurse and check up Emma, an American immigrant, in her home. She finds her sleeping the whole day. The reason is a mysterious curse, the Grunge, haunting the house and spreading like a virus. Karen must tear up the terrific circle of deaths not to become the victim of the Grunge herself.

[PAID] 100% Legal Download: The Grudge [2004]