Intensely gory and plot driven, this is nevertheless a psychological thriller. Despite knowing “who dunnit” within the first 5 chapters, the anxiety the author winds about the reader is suffocating and convincing. Kirino delves into the psyche of the lead characters, four factory women struggling with personal hardships, and uncovers a simmering power behind the drab mundanity of their lives. Their situation subsequently intertwines with the seedier and rougher side of Tokyo life, and they soon find themselves in a, very tight, proverbial corner. Thriller extraordinaire.