Marybeth Tinning is an American woman known for her involvement in a series of tragic events surrounding the deaths of her nine children between 1972 and 1985. Initially, these deaths were attributed to various medical conditions, but suspicions arose over time regarding the circumstances of their passing. In 1986, Tinning was charged with the murder of her last child, Troy, and later convicted in 1987. Her case raised significant questions about child welfare and the legal system's ability to protect vulnerable children. Tinning was sentenced to 20 years to life in prison and has been a subject of public interest and debate ever since.