Oculus

Oculus is the film where Flanagan worked out what he was for, and its central device is still the best thing he has done.

The device is editorial. The film runs two timelines — the siblings as children while their parents come apart, and the same siblings as adults in the same house eleven years later — and it does not cut between them so much as let them bleed. A door opens in 2002 and closes in 2013. Adult Kaylie walks down a corridor and passes her child self. By the last half hour the film has stopped signalling which period you are in, and the effect is not confusion but something much better: you lose the ability to trust a shot, which is precisely the condition the characters are in.

That is a genuinely difficult thing to pull off and almost nobody has tried it since.

The mirror is a brilliant antagonist because it cheats

The Lasser Glass does not chase anybody. It alters perception. You reach for a glass of water and drink from a light bulb; you bandage a wound and find you have stapled your own hand; you watch a camera for proof and the camera shows you what the mirror wants. Kaylie's entire plan — timers, alarms, cameras, plants to check whether it is draining life, a dog, an anchor rigged to swing and smash it on a delay — is an attempt to defeat an unreliable narrator with instruments, and the film's cruelty is in how patiently each instrument is turned around.

Karen Gillan is very good as a woman whose competence is itself the trap: she has spent eleven years preparing, and the preparation is what gets her killed.

Where it is weaker

The parents' timeline is the stronger half and the film knows it, which leaves the adult sections occasionally feeling like a delivery system for exposition. The mirror's history arrives as a list of previous owners read aloud. And Flanagan's later work is better at making you care about the people — the siblings here are a thesis and a doubter rather than characters with much interior life.

For the same family-grief-as-haunting handled with more warmth, The Haunting of Hill House is where he took this next; for the same unreliable-image trick in a colder film, Lake Mungo.

The short answer: the plan fails completely. The mirror makes Kaylie see Tim standing where the anchor's kill-switch is, and when she calls him over she is in fact standing in its path herself. The anchor swings and kills her. Tim, holding her body, is found by police and institutionalised again, and the mirror — undamaged — is taken away to be sold on. The last shot is their parents' reflections watching from inside the glass.

What does the Lasser Glass actually do?

It controls what the people near it perceive, and it feeds on them. It has no physical form of attack: everything it does is a substitution. Food becomes something else, a wound becomes self-inflicted, a person is somewhere they are not. It also drains the life around it — plants die, the dog dies, people stop eating without noticing — and the film's best unsettling detail is that Kaylie and Tim keep forgetting to eat while explaining that it makes you forget to eat.

Why does Kaylie's plan fail?

Because every element of it relies on perception, and perception is what the mirror owns. The cameras record what it wants recorded. The timers are heard when it permits. The anchor — the one purely mechanical safeguard, rigged to swing on a delay whether or not anybody is conscious — is the only part that works, and it works by killing her, because she has been moved without knowing it.

It is a very clean piece of plotting. The plan does not fail from a mistake. It fails because it was designed by somebody inside the thing she was trying to measure.

What happens to Tim?

He is arrested beside his sister's body, with nothing in the record except that a man released from a psychiatric institution eleven years after killing his father is found with a second corpse. He is institutionalised again, and this time there is no version of events he can offer that anybody will believe. The mirror has repeated itself exactly: one dead parent figure, one child blamed, one survivor with a story.

What is the final shot?

Their mother and father appear in the glass behind them, eyes clouded, watching. It confirms what the film has implied — that the mirror keeps what it takes — and it establishes that the Lasser Glass is going back onto the market with two more people inside it.

Scored against the published rubric, here is what the numbers mean.

Reality anchor 068 is the signature. 77 works score lower. The film sits on the dream-logic side because its central mechanic is that nothing you are shown can be verified, and its structure makes the audience share that.

Tone 016 is bleak — 40 works score lower. Both siblings lose, both parents are still trapped, and the object survives intact to do it again.

Era bias 080 is modern craft, with 72 works lower. Clean 2013 digital photography and a conventional contemporary mix; nothing analog is being imitated.

Viscera 034 is low — 40 works score lower. There are two genuinely hard moments, one involving a light bulb and one involving a staple gun, and they work because almost nothing else in the film is explicit.

Pace 054 sits just on the shock side, with 73 works slower. The dual timeline keeps something happening almost continuously.

Threat 025 leans supernatural — the mirror is never explained, never bargained with, and has no motive beyond appetite.

On jump scares: a handful, and the best ones are substitutions rather than stings — you realise what someone is actually holding a beat before they do.