In the first episode of "Radioactive: The Karen Silkwood Mystery," Karen Silkwood, a plutonium plant worker, tragically died 50 years ago while en route to expose unsafe conditions at her workplace. Although her death was ruled an accident, many suspect foul play linked to her whistleblowing activities. ABC reporters investigate her life, sharing newly uncovered evidence and firsthand accounts that reveal the inadequacies of past investigations. The episode highlights her family’s ongoing quest for justice, especially through the eyes of her son, Michael Meadows, who grapples with his mother's legacy and the impact of corporate intimidation on their lives.