Canada

If you're not back by midnight... you won't be coming home!
Four people share a guilty secret. Six years ago to the day, Robin Hammond died in mysterious circumstances. Now the psychopath, wrongly accused of her murder, has escaped. Kim and Nick are to be crowned Queen and King of the Prom. Their preparations are interrupted by threatening phone calls. As darkness falls the students arrive in the auditorium to begin the evening's celebrations. As they dance, a sinister figure creeps stealthily through the darkened corridors, masked and with a twisted mind bent on revenge...