10 Movies You Should Never Watch Alone

Irish director Ciaran Foy is probably best known for taking over from Scott Derrickson behind the camera on 2015's Sinister 2, but his 2012 debut Citadel is considerably more likely to leave a mark on viewers.

While ostensibly a contemporary variation on a haunted house/zombie movie set-up, Citadel delves into some very tough thematic territory which will be close to home for plenty of viewers. Set in a crumbling inner city tower block, the film opens with a pregnant woman being brutally beaten senseless by a gang of hoodies; the baby survives, but she does not, leaving her traumatised husband to raise their child alone.

While the nature of the threat takes the film into supernatural territory (these aren't just your standard little terrors in hoodies), Citadel's handling of agoraphobia, PTSD and the overall grimness of life on the poverty line is all too true to life. Aneurin Barnard is excellent as the terrified, grief-stricken young man living out every new father's worst nightmare. (You could think of it as Eraserhead meets Assault on Precinct 13.)

It all builds towards a crash-bang-wallop final confrontation which proves hugely cathartic, but it's the early half of the film that really gets under the skin.