A scientific look at creature sightings around the world, with episodes devoted to the Loch Ness Monster, Bigfoot, werewolves and even a Stalinist attempt to breed a race of supersoldiers by cross-breeding humans and apes. The show is described as one-part history, one-part science and one-part, well, monsters.
Do wild hogs in the US grow to monstrous sizes? Many think so. But are these creatures fattened up in a pen, or is there another way they have reached gigantic proportions?
An elusive predator, which used to prey on goats and dogs in 1954, has returned. In 2007, residents of Bolivia started mysterious losing pets and farm animals.
With eight cameras rolling, paranormal experts record bizarre occurrences in one of the most haunted houses in America, the Lizzie Borden house.
According to stories and sightings, the Grassman is similar to Bigfoot, but builds strange nests and has been known to attack. Can science help explain this creature?
Investigating reports of huge, man-eating snakes of 50 feet or more in length in Venezuela.
Rats are the stuff of nightmares and recent archaeological evidence suggests that they once grew to massive sizes. Could these huge rodents make a comeback?
On the moors of England over 200 livestock were torn apart between 1979 and 1983. Some suggest that this was the work of a strange 'black beast'.
In 1995, farm animals in Puerto Rico begin turning up dead, apparently drained of blood. Was this the work of the fabled Chupacabra?
Native American history is full of 'Hairy Man' stories and cave art. Did Native Americans know the truth behind the Bigfoot legend?
Most agree that vampires are fictional creatures, but there have been cases of people who thirst for blood. What is the reason behind their cravings?
Divers probe the depths of the North Pacific, where the world's largest known species of octopus lives.
Researchers and wildlife experts follow the trail of Bigfoot - descried as a large, hunchbacked creature by those who claim to have seen it.
An exploration into the potential existence of the lake monster phenomenon, of which there have been hundreds of mysterious sightings worldwide.
Join the expedition to the far east where a team of experts conduct a search for answers about the existence of the rumoured Wildman.
Are big bears getting more assertive and aggressive? Witnesses describe horrific bear attacks and take a look at unusual bear remains.
The Sea of Cortez holds a monster of gigantic proportions. Witness video evidence of what appears to be a huge squid under the ocean's surface.
An expedition hunts for a monster-sized, predatory spider in South America and investigates reports from the Middle East about giant arachnids.
A deep dive into the behaviour of the bull shark, which can tolerate fresh water, swimming hundreds of miles upstream from the ocean.
The team travels to Australia's Blue Mountains in search of evidence that the huge megalania lizard isn't really extinct.
An expedition armed with high-tech surveillance equipment stakes out a remote cabin in Canada that has been under attack by a creature that might be a sasquatch.