Ghost Gate.

The movie is set several years after the brutal murder of author Munetuga Tokida's secretary. Tokida was subsequently cleared of the crime, but vanished soon afterward. For years after the murder, Tokida's house was left untouched because people feared it was cursed. One day, a man named Kazuo receives a mysterious email informing him of a 50,000,000 yen reward for anyone who can enter the house and find clues to unravel the mystery of the murder that occurred there...