The story revolves around the murder of a wealthy playboy, David Henley. When Henley is found dead in his locked study, the police are stumped as to how someone could have entered the room without leaving any clues. Enter Sir Clinton Driffield, a renowned detective who is known for his brilliant deduction skills. With his assistant, Squire Wendover, Sir Clinton must unravel the mystery of Henley's murder and identify the culprit among nine possible solutions presented by different individuals involved in the case. As the investigation unfolds, secrets are unearthed, alibis are questioned, and motives are revealed. With its well-crafted plot, intricate clues, and surprising twists, "The Case with Nine Solutions" offers readers a gripping and intellectually stimulating mystery. Connington's writing style is engaging and his attention to detail is meticulous, making this novel a must-read for fans of classic detective fiction.