A crippled war hero finds himself trapped in a remote Welsh estate where he must confront a malevolent supernatural conspiracy. Toby Jugg, a decorated fighter pilot recovering from his injuries, seeks refuge at Llanferdrack House, only to discover that his caretakers may be orchestrating a sinister plot against his mind and soul. As he navigates the physical limitations of his wheelchair and the psychological isolation of the estate, he must determine if the horrors he witnesses are manifestations of his own trauma or the work of an ancient, occult force. The narrative employs a tense, atmospheric framework that emphasizes the protagonist's growing paranoia and the claustrophobic nature of his surroundings.

Readers frequently highlight the effectiveness of the book's atmosphere, noting how the author builds a sense of dread through the protagonist's isolation. Discussion often centers on the ambiguity of the narrative, as the reader is forced to question whether the threats are real or products of Jugg's fragile mental state. Critics often point to the author's ability to blend traditional thriller elements with occult horror to create a distinct sense of unease. The pacing is often described as deliberate, allowing the tension to mount steadily until the final confrontation. Many readers appreciate the historical context of the post-war setting, which adds a layer of realism to the supernatural events.