George McKillop recommended that teenagers aged 14-19 appear in the opening scene to make it more appealing. Connor Ure suggested having a mixture of male and female characters and setting it at night to emphasize the impact. Adam Black said an ordinary house would be a good setting since strange things often happen in normal homes. George also said the opening should introduce the main characters and location. Adam preferred the color scheme to be black and red to represent mystery, blood, tension and danger.