Casey Sherman never met his aunt but he has studied her face ever since he was a young boy looking at a black and white photograph on his mother’s mantelpiece that showed Mary Sullivan with hair perfectly coiffed and a string of pearls around her neck.
It was an image that went around the world after Mary, at the age of 19, became the final victim of the alleged serial killer dubbed the Boston Strangler.
Casey, 54, an investigative journalist, says: “She has a slight smile in that photograph. You can just imagine what she was thinking... it was her senior class picture in high school. It was haunting and beautiful.”
