Something has been attacking a remote cabin in Northern Ontario, Canada--it may have left behind a blood trail. DNA analysis suggests that the creature is a non-human primate. A follow up test will confirm or deny this, and the results could change history. Meanwhile, a new expedition, outfitted with the most advanced surveillance and detection equipment, will set up camp at the cabin and wait for the creature's imminent return. Scientists will be brought in to tell viewers what the evidence reveals.

Travel to the Blue Mountains of Australia in search of the huge Megalania lizard that once stalked early man. History tells us that the lizard is long extinct, but there are those who believe Megalania still exists. The Komodo dragon is Megalania's closest living cousin--these giant reptiles can grow to over ten feet long and have a venomous bite. Watch as the team examines recent reports of attacks and even killings by the world's largest known lizards.

Are dangerous ocean predators prowling American rivers? Few people realize that the bull shark can tolerate fresh water, swimming hundreds of miles upstream from the ocean. History suggests it has at times penetrated up the Mississippi River as far as Illinois. The episode will examine the behavior of the bull shark and dive in the St. Lawrence Seaway to uncover another giant, the Greenland Shark. It can grow bigger than the Great White and has been known to head inland and eat land animals like caribou.

The movie "Arachnophobia" scared millions with its depiction of giant deadly spiders, but huge arachnids may not be limited to fiction. In 2006 a GI in Iraq was photographed with what appeared to be a three foot long arachnid. Meanwhile in the forests of Peru there are reports of spiders big enough to eat an entire chicken. A MonsterQuest expedition into the wilderness of South America goes on the hunt for a monster-sized predatory spider and examines man's fear of these creatures.

The Sea of Cortez holds a monster of gigantic proportions. Video evidence of what appeared to be a huge squid, 1000 feet under the ocean's surface, was captured in 2006 by a MonsterQuest expedition team. The footage is less than 2 seconds long, and difficult to analyze, but some experts believed the squid was up to 100 feet long. Now, MonsterQuest returns to the area with improved technology to find proof of this legendary sea beast.

Are big bears are getting more assertive and aggressive? In pre-historic times, giant bears weighed up to a ton and stalked early man. Listen as witnesses describe horrific bear attacks and take a look at unusual bear remains. The team journeys from Alaska to New Jersey to learn about bear activity and if hybridization or the next step in bear evolution could produce another crop of giant bears?

Join divers, biologists and forensic sketch artists as they team up to search for "Cressie", the mysterious creature allegedly lurking at the bottom of Lake Crescent in New Foundland. Native American legends date back centuries and refer to a "Pond Devil" and a "Swimming Demon". There have been recent sightings by witnesses who describe seeing a strange oversized eel. Discover what the evidence reveals as scientists use the latest hi-tech equipment to get to the bottom of Lake Crescent.

A Wild-Man may roam the mountainous and forested regions of China's remote Hubei province. Witnesses typically report that the creature is covered in reddish-brown hair, five to seven feet tall, and walks on two legs. To the Chinese authorities, who recently collected over one hundred unidentified hairs, it is not a matter of if this creature will be found, but when. An expedition to the Far East will meet the Wild-Man experts and join an international team in a search for answers.

What is the Monster of Whitehall? In 1976, in upstate New York, several police officers reported seeing an animal that they couldn't identify. It was described as a "large creature, seven to eight feet tall, walking like a gorilla hunched over and making a sound like a woman screaming." More than 30 years have passed and the sightings continue. The original police officers have agreed to be tested. Follow our team as they work with local researchers and renowned wildlife experts on the trail of the Monster of Whitehall.

To many, the vampire seems more a creation of fiction than fact. But for New Englanders in the 1700s vampires became all too real as families were turned upside down by a vampire scare that lasted more than a century. Bodies of those suspected of vampirism were exhumed and ancient curse-breaking rituals were performed on them. Was there any basis for their vampire fears? MonsterQuest uses the latest technology to analyze historic evidence of New England's vampires and uses medical science to investigate those who believe themselves to be vampires today. Is there a common element between the suspected vampires of America's past and present? And are any of them real?