Arthur Gask's 'The Hidden Door' is a gripping mystery novel that delves into the realms of psychological suspense and intrigue. The story follows a detective who is tasked with solving a baffling murder case that seems to have no clear motive. Gask's intricate plot twists and turns keep the reader on the edge of their seat, as they navigate through a labyrinth of secrets and hidden agendas. The author's descriptive prose and attention to detail create a vivid setting that immerses readers in the chilling atmosphere of the narrative. Set in the early 20th century, 'The Hidden Door' reflects the author's adeptness at crafting classic detective fiction that keeps readers guessing until the very end. Arthur Gask, a renowned mystery writer of his time, draws on his background in criminology to weave a tale that is both sophisticated and engaging. His expertise in the genre shines through in the meticulous plotting and well-drawn characters that populate the pages of 'The Hidden Door'. Fans of classic detective fiction will find 'The Hidden Door' to be a captivating and rewarding read that showcases Gask's talent for crafting intricately plotted mysteries with a psychological edge.