When a Missouri real estate tycoon fell sick in 1909, he promised his family a large inheritance. But one in-law was after far more than a piece of the pie. Dr. Bennett Clark Hyde wanted the whole fortune, even if it meant using his medical knowledge for murder. Keep up with us on Instagram @serialkillerspodcast! Have a story to share? Email us at [email protected] Learn more about your ad choices. Visit podcastchoices.com/adchoices