When an American-style residential camp is set up in the grounds of an English stately home, the teenage camp counsellors are looking forward to a fun summer of activities.

But right from the outset, things don't feel quite right at Camp Miller. Rumours circulate of a tragedy that took place in the grounds and there are unexplained sightings of a ghostly presence.

Then the incidents begin - a near-drowning out on the lake, a fatal fall from a cliff-face … Are these tragic accidents or is there something more sinister going on at Camp Killer?