The Fallow Field, has now turned the story into a novel which is available as an eBook from Amazon.
If you've seen the film, you know the basic story, but in case you haven't here's the synopsis:
Amnesiac Matt Sadler awakes alone in the middle of a wilderness with no recollection of the past seven days. As disturbing slithers of memory gradually return he retraces his steps to a remote farm owned by loner Calham. The farmer is suspicious of Matt but instantly sparks a dark sense of déjà vu. Calham turns on Matt, imprisoning and interrogating him, before forcing him on a terrible journey of abduction and slaughter to show the amnesiac the twisted games they used to play together. As Matt s fogged memory slowly begins to clear and he learns the two men share a violent history, the horrors of their past come skipping out of the darkness to greet them….
You can find out more about Leigh's forthcoming work at his new website.