Jack the Ripper may get all the fame, but his 1960s counterpart, Jack the Stripper, will really send shivers down your spine. At least six women, all prostitutes, were murdered at his hand--possibly more. Most intriguing of all...he was never caught.

The crimes, though often forgotten today, inspired the crime novel "Goodbye Piccadilly, Farewell Leicester Square," which Alfred Hitchcock turned into the 1972 movie, "Frenzy."

Go inside the hunt for this brutal killer in this gripping short biography.