<span class=normal>Talking about project, Reupal commented: Most scenes in the movie were shot with a retractable knife or with no knife at all. The Prime Focus team worked on creating a CG knife in some places while for other shots the existing knife was enhanced and replaced, complete with the required glints and blood stains to make it look even more terrifying. <br><br><br><p class=clear>&nbsp;</p>The team at Prime Focus undertook extensive research understanding each shot before executing it. Various references were studied to assimilate the way a fresh injury or wound would look, the properties of blood and the colour of blood stains on a knife. Each shot in the film was treated separately to make sure the sequence was overall very scary and convincing.</span>