The drama is set on the famous Alderley Edge sandstone escarpment and unfolds over one long day in late summer. When a body is discovered in a cave, the area is sealed off and all witnesses herded together in the Wizard pub. One by one they give their version of events to DS Lynch. As the stories unfold, the events of the day gradually converge. All the characters believe they are in some way linked to the dead body. But when you’re on the Edge, nothing is quite as it seems.