The film stars Elana Di Troya as Sam, the daughter of a world-famous artist who is left home alone for a weekend.

The get-together escalates into a full blown party with alcohol and lovemaking, as Heidi invites her boyfriend, Toby, and his friends.

The first draft of the screenplay was initially written in 2011 when the idea came to Hooper after a house party at the location where the film would eventually be shot.

[3] Hooper was determined to not write "another generic slasher" as he was "bored of the genre and wanted to mature it", saying "All the fear and tension comes from the characters and how they react to each other.

A sneak peek teaser was released on Christmas Day, 2014 following an extensive advent calendar marketing campaign on the film's official Facebook page.