Secret killer
On that time on the streets of London, one woman died after another. Especially the call girls were more angry the murderer. But who is murdered? Police could not rescue any sources from the murdered women. And at that time a mysterious letter came to the police. In the letter, a person named Jack Ripper claimed responsibility for his murder and wrote a lot of jokes about the police. It is said in the letter that the women who will be killed in the future and what they will do. But since then many more murders were in the name of Jack Ripper but he could not catch the killer till today
Alien signal
For how many years have people been waiting for a new life, a new planet, New life - which is much better than the world. However, whether it is advanced or underdeveloped, now no other soul or civilization existed outside the world. They did not come back after sending many signals to improve their technology. But in the end, in 1977. Jerry R. Ehman Ohio was working on the Big Air Radio Telescope. Suddenly he received a strange signal. It is not even from within the world. From the space. Stunned and surprised, after getting the message of 72 seconds, he kept his feelings on paper. But that's not all. Try sending counter signals. Later, a lot of messages and signals have been sent along with that signal. But no answer came back.
Zodiac Letters
In the 1960s and 70s, a group of criminals found who operated their activities around San Francisco. But their name is so named Zodiac why? Because there is nothing else. Their love for the puzzle. Police officers sent some letters to the rules. It was difficult to break them and find them meaningful. Three letters were tried out in a lot of means. But they did not have any meaning. It still remains to know the meaning of the letters