Creep (2014)

When a videographer answers an advert of the website Craigslist for a one-day job in a remote mountain town to video the last messages of a dying man, the job takes a strange turn when the last messages get darker and darker. The videographer continues to see the job through, but when it is time to leave he is unable to find his keys, and when he receives a strange phone call he finds his client is not at all what he initially seemed to be.