Adelgitha; or, The Fruits of a Single Error is a gripping Gothic tragedy by Matthew Lewis, exploring the harrowing tale of a fallen woman ensnared by the merciless blackmail of a tyrant after rejecting his advances. Set against the backdrop of Otranto during the High Middle Ages and featuring historical figures like Robert Guiscard and Michael Ducas, this play delves into timeless themes of treachery, power, and despair. While it may lack refinement, its ability to evoke intense emotions makes it a captivating experience, particularly on a stormy night when the shadows of its dark narrative can truly come alive.