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Fraught and confusing to begin with, writer/director Sebastián Silva’s trippy arthouse horror doesn’t settle down for a good while – or at least before you realise that it’s fully intended to be a nervous-breakdown movie.

Steeped in off-key intrigue, it follows Juno Temple’s tourist to a Chilean island, where’s she’s tormented by Michael Cera and pals, the local wildlife and, perhaps, something less tangible.

Bringing to mind urbanoia flicks (eg 2008’s Long Weekend ) and psychosexual dramas (eg 1971’s Let’s Scare Jessica To Death ), it ebbs away at the climax, but there’s 45 minutes where it sings loud and strange.