The blood used in the film was chocolate syrup, inspired by Alfred Hitchcock's Psycho.
This film pays homage to several directors by directly mimicking a film technique or shot. 1. The rolling camera that zooms out to show Lucy's dead body on the bed (Alfred Hitchcock's Psycho). 2. Jonathan lighting candles in the dark (Alan Parker's Pink Floyd The Wall). 3. Jonathan banging on chamber door, filmed from the floor (Stanley Kubrick's The Shining). 4. Jonathan's face reflected in the broken mirror (Stephen Spielberg, War of the Worlds).