Douglas masterfully plays with the contrast between Cornwall's idyllic setting and the threatening atmosphere surrounding Libby. The apparent tranquility becomes a breeding ground for fear and paranoia as the paradise reveals its dark side.

Libby's mysterious past plays a central role as the story unfolds. Douglas gradually reveals the events that brought Libby to this point, blurring the lines between guilt and innocence, forcing her to confront her demons.

The author expertly leads readers down false trails, maintaining constant suspense through clever twists and surprising revelations. The uncertainty about who Libby can trust creates a claustrophobic atmosphere.