A slick but empty British horror
F doesn't quite work, but it aims at something interesting.
The only full marks (the director) deserves are for wrapping things up in less than 80 minutes.
As a tribute to master-scaremonger John Carpenter this is a promising B+.
It's reactionary stuff but there's some effective gruesomeness.
Writer/director Johannes Roberts extracts nothing of interest, unless you think people backing slowly away from knife-wielding psychos constitutes horror.
Intermittently effective but spoilt by an opening sequence about classroom violence that feels as if it’s from another film altogether.
Pulsing, paranoid and downright eerie, this is a hoodie thriller with proper scares John Carpenter would be proud of.
General release. Check local listings for show times.