Araya travels to Florida and dives into the Atlantic Ocean to find a giant shark tooth. Christina goes searching for the monstrous beast in the shark-infested waters of the Pacific Ocean. Doubting Dave shows you how you can magnify things using water.
Araya treks to Puerto Rico to investigate reports of strange glowing lights in the water. Christina takes a virtual reality drive through the deepest part of the ocean looking for an alien base and goes underwater for real in a mini submarine. Doubting Dave shows you how to make your own water UFO, using some soda bottles and a bicycle pump.
Araya returns to the Edinburgh Vaults to investigate a passage inside where hundreds of people sick with a fatal and contagious disease lived and died. Christina heads to the Winchester House in California. The home was built to confuse the ghosts who were supposedly chasing the home's owner. Did these ghosts get trapped inside this monster mansion? Doubting Dave shows you how to make a screaming ghost sound that will scare your friends.
Araya goes to Puerto Rico, the place where the chupacabra first appeared. Christina goes to Texas where she digs up what could be a chupacabra skeleton. Doubting Dave tries to convince a group of kids that a mysterious monster has been spotted in the woods. Does a jackalope exists?
Both hosts travel to England to investigate a mysterious circle of stones called Stonehenge. Araya takes to the air to see if he can discover why it was built, and Christina uncovers the bones of ancient people buried near Stonehenge - could they be the people who built it? Doubting Dave shows you how to make your own stone calendars at home.
Christina takes a balloon ride over the lunar landscape of Capadocia, Turkey in search of the entrance to a hidden underground city. Araya jumps from a helicopter into the Caribbean Sea to investigate what looks like the remains of an ancient underwater city. Doubting Dave shows you how to make your own ant farm.
Araya takes to the air in search of an angry goddess said to live in an active volcano in Hawaii. Christina travels to England to investigate screaming skulls. Doubting Dave makes his own mini volcano and lava.
Araya investigates a cave in Hawaii said to be haunted by the ghost blood of a murdered queen. Christina travels to Turkey to investigate the tomb of King Midas, the mythical king who legend says had the power to turn everything he touched into gold. Doubting Dave shows viewers how they can amaze their friends by turning a penny into gold and then back to copper again.
Araya travels to England to meet people who say they have been contacted by aliens and brings one eyewitness to a hypnotist to see if she can remember their message. Christina meets a man who used a giant antenna to record a strange message from outer space he thinks could have come from aliens. Doubting Dave shows you how to make your own parabolic dish to pick up sounds you wouldn't otherwise hear, just like a satellite dish!
Christina examines a cowboy "mummy" from a roadside museum in Seattle. Will she prove that some of the oddities in these monster museums are real? Araya travels to a New York curiosity museum to investigate a mummified body of a giant man. Could it be proof that a race of giants existed? Doubting Dave shows you how you can make your own fake mummy.
Araya goes to Hawaii to see whether the ghosts of Hawaiian warriors are returning to the road where they died. Christina investigates the fence post ghost in Virginia who is said to pop out of the cornfields at night to scare local drivers. Doubting Dave shows you how you can make your own pop-out scare.
Christina travels by bush plane to this remote Alaskan lake to investigate a strange creature lurking in the depths of Lake Iliamna. Araya dives 'into the blue' to investigate a half octopus, half shark sea monster that lives in the blue water holes of the Bahamas. Doubting Dave shows you how to make your own octopus ink.
Christina, Araya, and Doubting Dave take viewers "Behind the Scenes" of Mystery Hunters. Packed with bloopers and plenty of never before seen footage, this show will give viewers a sense of what it is really like to be a Mystery Hunter.