Chand Pahari (2013)

Six friends set out for a destination called Chand Pahari which is supposed to be nature's delight as it is supposed to be surrounded by forests, mountains, oceans etc. After reaching there and deciding to stay there for 3 days at a house (where the caretaker cum cook cum owner warns them about venturing out at night which might result in danger), one of the friends, Jack starts misbehaving with the others . This leads to an unpleasant situation and causes a rift and unpleasantness. Later on people start getting killed. It was earlier reported that some students who had come here previously had also disappeared. Who is the killer ?