Family tensions between a brother and sister with psychic powers threaten to tear apart the filming of an episode of a paranormal reality TV show. But simmering emotions may be the least of the crew's problems...
In infrared photography, the photographic film or image sensor used is sensitive to infrared light. The part of the spectrum used is referred to as near-infrared to distinguish it from far-infrared, which is the domain of thermal imaging. Wavelengths used for photography range from about 700 nm to about 900 nm. Film is usually sensitive to visible light too, so an infrared-passing filter is used; this lets infrared (IR) light pass through to the camera, but blocks all or most of the visible light spectrum. These filters thus look black (opaque) or deep red.