Explore one of history's most notorious maximum-security prisons through these tales of mayhem and madness.

As "animal factories" go, the Ohio Penitentiary was one of the worst. For 150 years, it housed some of the most dangerous criminals in the United States, including murderers, madmen and mobsters. Peer in on America's first vampire, accused of sucking his victims' blood five years before Bram Stoker's fictional villain was even born; peek into the cage of the original Prison Demon; and witness the daring escape of John Hunt Morgan's band of Confederate prisoners.