Episode 1 - Alien Roadkill

Nat Geo joins the search for an unidentified "highway beast" in Minnesota. Villagers in Southern Africa are stumped by round patches of sand that stretch over a thousand miles of landscape.

Episode 2 - Shark Attack Beach

A popular surfing beach in Florida is known as the shark bite capital of the world, in England a mystery feline predator stalks the woods.

Episode 3 - Raining Fish

Nat Geo WILD investigates nature's most bizarre, baffling and downright mysterious cases.

Episode 4 - Croc Shock

What has caused hundreds of freshwater crocodiles to suddenly die in the Australian wilderness? Plus, a sterile mule in Morocco gives birth to a miraculous foal.

Episode 5 - Kruger Killers

A mystery predator is turning Kruger National Park into a slaughterhouse; a bizarre, unidentified creature is caught on film in North Carolina.

Episode 6 - Flying Reindeer

Can reindeer really fly? And what is causing marine turtles to wash up dead and emaciated on the Great Barrier Reef?

Episode 7 - Poison Beach

How can rocks in Death Valley, CA move by themselves, leaving trails that stretch for hundreds of feet?

Episode 8 - American Lake Monster

Does Vermont's Lake Champlain have its very own Loch Ness Monster? In Norway, a blue spiral light appears in the pitch black sky.

Episode 9 - Tasmanian Tiger Terror

Can an extinct predator come back from the dead to terrorize a town? Why do millions of sardines swim to their deaths in a small harbour?

Episode 10 - Bird Apocalypse

Five thousand blackbirds fall out of the sky one night in Arkansas. In the Scottish Highlands a sticky goo found on the ground has experts baffled.

Episode 11 - Bird-Eating Catfish