Retired FBI agent and criminal profiler Candice DeLong digs into a tragic family betrayal: the antifreeze murders. Diane Staudte, a seemingly ordinary wife and mother from Missouri, shocked her community when it was revealed she was responsible for a series of poisonings that led to the deaths of her husband, her son and the hospitalization of her daughter. In a twisted bid for control and financial gain, Staudte poisoned her family with antifreeze–and acted with the help of her middle daughter and favorite child, Rachel.

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