Cincinnati's history is rife with reprehensible crimes and great tragedies. In 1874, a brutal murder caught the attention of a strange and notorious journalist, who turned the crime into a legend. In the 1930s, Cincinnati resident Anna Marie Hahn became Ohio's first female serial killer and the first woman executed in its electric chair—but she isn't the only serial killer to have darkened the dangerous streets of the city. Murderers are not the only monsters. Microbes did the dirty work in 1849 and 1919, and Mother Nature herself turned killer in 1937 when the Ohio River lethally overflowed its banks. Explore stories of murder and catastrophe as author and history lecturer Roy Heizer leads this dark journey into the sinister side of Cincinnati.