Scientists continue to investigate both a centuries-old killing spree and modern-day sightings. Court records and sketches from the 18th century depict an unbelievable case. A creature that slays like an animal, but acts like a human. Could it be a werewolf? Why were some of the bodies found without any clothes? Why were some decapitated? A biotechnologist is testing whether the severity of the attacks could in any way be indicative of who - or what - carried them out. In Lemgo, historian Dr. Utz Anhalt is investigating a case involving a convicted werewolf. Meanwhile, cryptozoologist Ken Gerhard is looking into an alleged encounter with a werewolf in the US. Vivid reports detailing the sightings give historical insight into the origins of this terrifying beast.

Ghosts and spectres - Mysterious creatures from the afterlife. Since the dawn of time, people have believed in life after death, ancestors coming back to visit us, and unfortunate souls lingering between two worlds. But is it actually possible to come back to Earth as an ethereal spirit? Researchers from all over the world are attempting to add some tangibility to this seemingly incomprehensible notion. Are encounters between humans and supernatural creatures real, or are our senses just playing tricks on us? Even today, new stories of revenants or other ghostly apparitions continue to surface in forgotten places, from the haunted castle in Schallaburg, Austria, to the former tuberculosis sanatoriums near Germany’s capital Berlin, or the abandoned Waldlust Hotel in Southern Germany.

A gigantic flood inundates the world and destroys all life on earth. Only Noah and the creatures on his ark will be saved from total extermination - so the Bible says. The Flood is the greatest catastrophe that has ever been described and at the same time one of the greatest mysteries of mankind. Did the flood really exist? And what caused it? Researchers around the world are looking for evidence of the biggest flood of all time. They want to solve the riddle in ancient scripts and with the help of the most modern technology. How devastating was the flood? In which region of the world did it take place? And what is really behind the “myth of the flood”?

Attila, King of the Huns - the entire continent of Europe trembled in fear of this legendary leader. His life: victorious. His death: a legend. No one knows where he is buried. But there are some new clues. Researchers surmise the tomb of the legendary king is located in the Hungarian lowlands. Legends point us to his final resting place. Scientists and amateur researchers alike search for hidden clues - even under water. Accompanied by underwater archaeologist Attila Tóth, we set out on a journey to the depths of the Danube. Legend has it that Attila is buried under a river. Rock star Levente Szörényi, on the other hand, is convinced that Attila's grave lies in an old quarry. Spectacular experiments with weapons reveal how the Huns became a legend 1,500 years ago. Since then, his name has become shrouded in legend.

The Nibelungs - To this day, Germany's greatest legend still has modern treasure hunters under its spell. With the help of ancient scripts and divining rods, they set out in search of Siegfried's legendary golden treasure. The magical treasure, which is said to have been sunk in the Rhine, includes gold and silver, in addition to a cloak of invisibility. What's the story behind the myth? Scientists are trying to uncover the myth’s origins. The trail leads to Scandinavia where an archaeologist is looking for one of the saga’s oldest traces. A blacksmith tries to reforge Siegfried's sword using an ancient technique and conducts an experiment with the weapon. The discovery of bones provides an explanation for the dragon. Historians and linguists give insight into who the Nibelungs were and what the treasure might have looked like.

It promises power, wealth, even eternal life: The Holy Grail. The chalice of the Last Supper, in which Jesus' blood is said to have been collected, is one of the most important relics of Christianity. The National Socialists were already looking for him - in vain. Is the Holy Grail real or is there something else behind the myth? The historian and knight of the grail Dr. Michael Hesemann now claims to have found the true Holy Grail: The Santo Caliz in the Cathedral of Valencia. Together we go with Dr. Hesemann on the way of the chalice to the Spanish Pyrenees. Can the authenticity of the Grail be proven? Or does the trail lead to England, to King Arthur and his knights of the grail?