Eyewitnesses in Wisconsin and Michigan report seeing a tall hairy man - beast some describe as a dogman...a centuries old legend based on myth, not a real animal. But what are they seeing? MonsterQuest will deploy professional hunters and trackers in an area with recent sightings, armed with a tranquilizer gun. And for the first time eyewitness accounts will be put to the test, using polygraphs and hypnosis&the results will astonish.

A look at the rising concern of poisonous jellyfish, from New York's Hudson River, to the beaches of Spain, these animals have become floating deathtraps in the world's oceans, and their population explosion may be the result of mankind's changes to their ecosystems.

Throughout history there have been sightings of a massive octopus big enough to attack and sink boats. Could such a creature really exist? Our divers probe the depths of the North Pacific where the world's largest known species of octopus lives. Could these octopuses be a food source for a monster? The investigation will use various underwater camera systems, including a tiny camera small enough to probe inside octopus lairs. Deep waters, rough currents, freezing temperatures and the prospect of encountering a 20-ton boneless horror make this a dangerous expedition.

Dogs are known as man's best friend, but now canines are striking fear into many who report attacks by predatory packs. Originally descended from wolves, domesticated dogs were brought to the United States 12,000 years ago and used as aggressive protectors. Today, more and more dogs are being turned loose on the streets and returning to their wild roots. These feral dogs are attacking people. Now, MonsterQuest launches a search to follow these ferals, using state of the art cameras to uncover where they live and how dangerous they are to man.

History tells us that tales of Alligators lurking around in the sewers of New York are based in truth. In the mid 1930s three teenagers pulled an eight-foot alligator from a storm drain. Reports persisted until a skeptical Superintendant of Sewers was forced to investigate for himself. What was found shocked even him - swarms of alligators alive beneath the busy main street of America's biggest city. Crews were sent in to kill the deadly reptiles, but the stories of the gators in the sewers lived on to this day.

A look at an 1895 fish attack off the coast of Florida by a Goliath grouper, a massive fish that can weigh up to 1,500 lbs and a recent attack that may be evidence these dangerous fish are returning. Then, other attacks at the freshwater lakes of Minnesota by the no-less-aggressive Muskie could be on the rise.

The movie Jaws scared an entire generation off of ocean beaches...but there are monsters lurking in freshwater lakes and rivers too. Are these just fish stories or are they real? From the Artic Circle to the Amazon, MonsterQuest will launch expeditions to find the biggest and nastiest giant fresh water fish. From catfish large enough to swallow kids whole to trout as large as a boat. Scientists will deploy giant lures and underwater cameras in a search for monster fish.

For decades cameras have been capturing images of a flying, torpedo-like creature. So fast it cannot be seen with the naked eye. Some think it is a military weapon, others believe it may be a creature from another dimension. But just what is it? This MonsterQuest scientific journey will use super high speed photography, physics and even a wind tunnel experiment to shed light on a creature simply referred to as Rods.

A MonsterQuest expedition will deploy researchers and the latest technology into the jungle, searching for evidence of a creature natives describe as half man, half ape.

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.

The bull shark and greenland shark are examined. These sharks are believed to have swam upriver hundreds of miles.

Another attempt at finding proof of the Sasquatch. Previously collected blood samples are further investigated, while another expedition is sent out in search of the famous hairy beast.

Increasing close encounters are frightening people in rural America. Historic stories have told of violent abductions by hairy beasts. Monster Quest will investigate whether witnesses are seeing a known animal or the same Bigfoot creature that has been spoken of throughout history. Monster Quest employs polygraph examinations, DNA analysis and bite force tests to discover what monster is turning up its aggression.

Investigation into sightings of Bigfoot-like creatures throughout the state of Ohio.

A fifty-foot monster is said to lurk beneath the cold, isolated waters of North America. The stories from Lake Okanagan date back to the earliest First Nation peoples, who lived in fear of this terrifying creature in the lake that became known as “Ogopogo.” According to eyewitness accounts, this ominous creature has a large snake-like body, large eyes and can move at high speeds. Sightings of this lake creature are so common that it has been seen more times than Scotland’s Loch Ness Monster, making Ogopogo the world’s most documented lake creature. With new, photographic evidence and an array of high-tech technology, MonsterQuest launches expeditions to this lake.

An investigation into the increasing number of great white shark attacks, following a team of researchers who are trying to determine why sharks are becoming more aggressive.

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Native Americans have long revered huge birds called Thunderbirds. There was a rash of giant bird sightings in Illinois, Texas and Alaska back in the 1970's. A giant bird with a 15-foot wingspan allegedly attacked a small child in Illinois. Could there really be a giant bird or is it mass hysteria? Take a scientific journey and follow the many eyewitnesses' accounts across the country and examine the most compelling evidence.

In 2006, the NY times revealed a devilish plan by Soviet dictator Josef Stalin to create monsters by crossing humans with apes. But was it real? And how far did he get? This MonsterQuest scientific journey will travel to Russia to find out. We will also look at the many other efforts, both by man and Mother Nature, to combine the strength of apes with the intelligence of man. This is a real Frankenstein story& from head transplants in the U.S. to cases of ape on human attacks. Man and Apes are not as different as you might think.

Investigation into the reports of gigantic swine like the 800 lb "Hogzilla" shot in Georgia in 2004.

In 1976, in upstate New York, several police officers witnessed an animal that they can't explain. They describe it as a "large creature, 7 to 8 feet tall, walking like a gorilla hunched over, making a sound like a woman screaming." Over thirty years later sightings are continuing and these police officers have agreed to be put to the test. Meanwhile, MonsterQuest teams up with local researchers and renowned wildlife experts on the trail of the Monster of Whitehall

A MonsterQuest expedition examines the Komodo Dragon, along with one of it's early ancestors, the Megalania Lizard.

Reports of flying creatures over North America are investigated. Also included is a history of flying creature lore; and an examination of a flying creature caught on film.

Investigation into the supposed existence of ghosts at the famous Lizzie Borden axe-murder house in Massachusetts.