There are very few female serial killers. Whether it is because they are better at evading detection and capture (doubtful) or just because there are fewer women with psychopathic tendencies (psychotic – almost all of them; psychopathic – not so much), I don’t know. However, one of the few of this breed is Della Sorenson. On this date in 1918, Ms. Sorenson kills the infant daughter of her sister-in-law.
…Over the next seven years, friends, relatives, and acquaintances of Sorenson repeatedly died under mysterious circumstances before anyone finally realized that it had to be more than a coincidence.
. . .
Early in 1923, Sorenson killed her own daughter, Delia, on her first birthday. When Sorenson’s friend brought her infant daughter for a visit only a week later, the tiny infant was also poisoned. After an attempt on Sorenson’s second husband’s life left him sick–but not dead–authorities began to think that there might be a connection between these series of deaths.
I honestly believe that this type of killer would have a much shorter career in the modern era, but before the FBI get deeply involved in studying and classifying serial criminals it was easier. Especially since it was almost unthinkable back then that a woman could be a cold-blooded murderer.
Oddly, finding any information on Ms. Sorenson different from that available on The History Channel website has proven challenging. I have read about her in one of my serial killers books, but cannot find any more information about her online after a cursory search.