At the 115th minute, during James's conversation with the nurse, the shots filmed from behind her show the nurse's face remaining still while she speaks.
After the cultists' attack, when Detective Villiers and Jason meet, the clock on the wall behind them remains frozen at 8:53pm, even though more than a minute passes.
At the 114th minute, James is driving in the rain, yet from inside his car there are no raindrops on the windscreen.
Whilst James crosses the bridge at the camp, the camera's shadow is visible in the bush in a single shot.
Tourism in Bhutan is strictly regulated, and visitors must be accompanied by a Bhutanese guide. It would have been virtually impossible for tourists or other foreign visitors to travel independently in the way portrayed in the film.
Loons typically call (i.e. cry) at dusk rather than during the night, unlike the film sequence in which James is chased by the cultists.
The film is set in the United States but was largely filmed in South Africa, and that overseas location is unintentionally revealed when the protagonist inspects a blank VHS cassette: it is an E-180; videotapes of that format used in the United States would start with "T" (for example T-180). The "E" prefix denotes "European" and applies to PAL/SECAM systems; the "T" prefix stands for "Television" and denotes NTSC systems.
When James visits Greg in hospital, just before he slides the door open, he knocks his arm against a black cloth, causing it to sway afterwards.
