In 1994, 13-year-old Nicholas Barclay went missing from his hometown in Texas.
Three years later, he was found thousands of miles away in Spain.
Except everything about him - his appearance, his accent, his memories of his family - appears to be completely different.
That is the set-up for The Imposter, one of the most thrilling, twisted, and completely brilliant documentaries ever made.
Of course, you don't just have to take our word for it - here are just a sample of some of the reviews the movie got when it came out in 2012:
"A mesmerizing psychological thriller bulging with twists, turns, nasty insinuations and shocking revelations that might have leapt from the pages of a Patricia Highsmith novel, The Imposter is all the more astonishing because it actually happened." - The Hollywood Reporter
"Despite a bunch of fourth-wall-breaking re-enactments, the look is consistent with most TV true-crime stories. But the way Layton parcels out information makes this story as strange and fascinating as anyone could desire." - New York Times
"The documentary equivalent of a page-turner." - Entertainment Weekly
"One of the most entertaining documentaries to appear since Exit Through the Gift Shop, a film similarly obsessed with role-playing and deception." - The New York Times
You can check out the trailer below, and you can watch the movie on Film 4 at 1.05am in the early hours of Tuesday 4 September (so maybe set your recorders in the evening of Monday 3 September);
Clip via Movieclips Trailers
