We watch Chloe Grace Moretz's epic meltdown from a bored distance, until the drama remembers its lost calling as a disease-of-the-week movie. At that point, we receive the abrupt news of a cure with an indifferent shrug.

Despite the fact that Susannah eventually manages to claw her way back from the brink of madness, this is a downbeat slog of a film which tells a not particularly involving story.

It's the sort of role for which the Razzies were invented, and what little audience it finds will almost certainly be heckling as they watch Moretz implode.

Brain on Fire is like a virus itself, trying to infect an otherwise interest story with its own mediocre movie clichés.