Our final episode this season recounts the tale of Mary Gallagher, Montreal’s ‘Ghost of Griffintown,’ and the gory murder that has had her ghost searching for her lost head for the nearly 150 years.  Well known to Irish Montrealers but not to many who live outside of the city, the story of Mary Gallagher and Susan Kennedy Myers – the woman who allegedly murdered her – brings together themes of Irishness, alcoholism, sexism, violence, and the supernatural.  We’re also not necessarily convinced that Susan was the murderer…