SanEat A film with more than the usual spoiler issues. Talking about it in any detail feels akin to handing you a gift-wrapped present and saying, "I hope you like it -- It's a thriller about a diabolical secret experiment."

Mehdi Hoffman There's a more than satisfactory amount of boom-boom in the movie's trim running time.

Rosie Searle It's the kind of movie you'll want to see a second time with someone who hasn't seen it yet, to remember what it was like to watch it for the first time.

Jemima It's a movie as timely as it is provocative and amazingly, for much of its running time, it is weirdly funny.