Jacob Jones is a respectable clerk at the Crystal Palace Company, with a pretty young bride and a delightful new home in Islington. When his wife is murdered, everything points to his guilt, even a handwritten confession. But the police discover Jacob Jones's diary, which tells a different story. They learn of a husband trying to bury his sordid past; a wife afflicted by a deep personal tragedy; an unlikely love affair that leads to a fatal conclusion. Is Jones' diary a confession? An attempt to exonerate himself? A study in madness? Read the police investigation - read the diary itself - and uncover the truth.