Yeh Raat (2006)

Rani, who suspects Rahul of having an affair with their mutual friend, Dolly, are the fifth couple to disappear while spending the night at a mansion near Khandala. Before the police could even complete their investigation, a sixth couple, Journalist Manish Malhotra, and his girlfriend, Shivani, who were equipped with a camera, also disappear. Mumbai Police Commissioner assigns this case to Inspector Vikram, who, in the company of the Commissioner's daughter, Neelu; their servant, Khiladi; and Professor L.K. Chawla, a Parapsychologist, travel there to try and unravel the mystery - little knowing the horror awaits them.