In the 17th and 18th centuries, Europe experienced a vampire hysteria: reports of people who had seen dead family members walking around and attacking people multiplied.
The most famous pictorial phenomenon of the late 20th century were the so-called "corn circles", strange drawings that suddenly appeared in cereal fields around the world.
One of the best-known legends is that of the Philadelphia experiment, in which the United States Navy tried to make a ship invisible that ended in disaster.
The biggest puzzle in the scientific search for extraterrestrial civilizations is the "Wow signal," a mysterious emission that was received by the Ohio University radio telescope in 1977.
Danni Büchner is invited to Sam Dylan's Halloween party. But the "Goodbye Germany" emigrant has no desire for many other party guests. And find clear words.
