You're Next (2011)

The film opens with a couple having sex. Afterwards, the man showers while the woman goes to get herself a drink. After his shower, he discovers "You're Next" written in blood on the living room's sliding glass doors, beyond which lies the woman's dead body. He is then killed by the Lamb Mask. In the next scene, a wealthy family is seen going to their remote Missouri vacation house, which happens to be next door to the house in which the couple from the opening scene were brutally murdered. The mother, Aubrey, claims she hears something upstairs and wants to leave. Ignoring her warning, her husband, Paul, goes to investigate, but is startled by one of his sons, Crispian, who has just arrived with his Australian girlfriend, Erin.

HOW TO WATCH THE MOVIE:  

1) CLICK 'CLOSE ADS'  BUTTON ON THE SCREEN

2) CLICK 'START THE VIDEO' BUTTON

3) LASTLY, CLICK THE 'PLAY' BUTTON