Fritz Haarmann gained popularity as a renowned butcher in Germany during the 1920s, but his reputation took a dark turn when it was discovered that the meat he sold was sourced from human beings.

For a span of six years, Fritz Haarmann skillfully utilized his role as a police informant to seamlessly blend into society, all the while committing a minimum of 24 gruesome murders that earned him the chilling moniker of the "Vampire of Hanover."

During the 1920s, Fritz Haarmann established himself as a prosperous vendor of secondhand garments, endearing himself to housewives due to his abundant supply of affordable meat. Little did they know, both his clothing and meat were sourced from the bodies of unfortunate runaway boys.
Despite being perceived as an eccentric individual by the residents of his hometown, Hanover, Fritz managed to maintain an amiable demeanor, leaving everyone to believe he posed no threat.

Astonishingly, even the police held a favorable opinion of him, unaware that he was actively engaged in a horrifying killing spree right under their very noses.

Once his crimes were discovered, Haarmann became notorious as the “Vampire of Hanover” who killed his victims with a “love bite” that went right through the windpipe. Also called the “Butcher of Hanover,” he ultimately confessed to nearly 30 murders, but police suspected he killed dozens more.