Boston's history is checkered with violence and heinous crimes. In 1845,
a woman lured into prostitution was murdered at the hands of her jealous
lover who used sleepwalking as his defense at trial. A leg was found
floating along the Boston Harbor, wrapped in a burlap bag that would
later be connected to a woman who was brutally murdered and dismembered
by her handyman. In the 1970s, a string of seemingly unconnected murders
led to a killer who became known as the Giggler. Christopher Daley
explores the tragic events that turned peaceful Boston neighborhoods
into disturbing crime scenes.