Fritz Hartmann' s Preserved Head -
Known as the "Butcher of Hanover" and
the "Vampire of Hanover" was a German
serial killer who is believed to have been
responsible for the murder of 27 boys
and young men between 1918 - 1924.
He was convicted, found guilty of 24
murders and executed. Hartmann was
beheaded by guillotine on April 15, 1925.
His head was preserved in a jar by
scientists to examine the structure of
the brain. Hartmann' s head is now kept
at the Jotting's medical school.