The Strange Death of Professor Shockley

College professor and renowned entomologist Marianne Shockley went swimming with her boyfriend Marcus Lillard and their friend Clark Heindel, who got together in a small Georgia town one spring night. By morning, she and Clark were dead. Only her boyfriend, Marcus, lived to tell what happened that night. This encore episode of "48 Hours" last aired on 6/17/2023. See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.