"By the Bog of Cats" is a play written by Irish playwright Marina Carr. Set in rural Ireland, it explores themes of love, loss, and the supernatural through the story of Hester Swane, a woman living near a mystical bog. The play delves into Hester's struggles with her past and her relationships with the people around her. The narrative incorporates elements of Irish folklore, particularly the significance of the bog as a symbol of both life and death. Hester's connection to the land and her haunting memories drive the plot, ultimately leading to a tragic conclusion that reflects the complexities of human emotion and fate.