UFO: Alien Invasion

In Kaikoura, New Zealand, strange lights are witnessed by pilots. When the story turns global, the Government is forced to investigate.

Witnesses in Texas claim a huge diamond-shaped object in the sky is responsible for their bizarre physical illnesses. Strange lights are seen in the skies over Brazil.

Experts investigate the strange light display that illuminated Scandinavian skies in 2009. They also revisit the public scare caused by the Washington UFO flap in 1952.

Experts revisit recent sightings of UFOs, including strange lights seen crashing into the ocean off Canada and a bizarre incident involving two fighter jets over Iran.

A look at the investigation into a mass daylight sighting of UFOs near Brisbane. Plus, a Japanese cargo plane could have been pursued by extraterrestrials.

A small Amazonian fishing community is seemingly terrorised by UFOs. In Australia, a driver is killed where a UFO was seen just days before.

Investigation into the strange lights seen streaking across the skies of Spain and Portugal in 2004. Plus, a UFO could have caused a power cut at a military base in Vietnam.

Experts investigate a pilot's pursuit of a UFO bound for a US Presidential retreat, and a rumoured link between strange lights in the sky and a set of gruesome deaths.