The world's finest ruby was stolen from the bride of Prince Kassim's great-grandfather several generations ago in India by a marauding rajah. It's now several decades later and the British have conquered India, and one day the ruby shows up for sale by a wealthy London jeweler, Sir John Garnett. Garnett has his own problems--there have been a rash of thefts of his wife's jewels, and he hires a private detective named James Brett to investigate.

15 chapter mystery serial: [1] “The House of Secrets,” released 5 April 1915; [2] “The Face of Fear,” released 12 April 1915; [3] “The Silver Cup,” released 19 April 1915; [4] “The Ring of Death,” released 26 April 1915; [5] “No Other Way,” released 3 May 1915; [6] “The Strength of Love,” released 10 May 1915; [7] “Into the Night,” released 17 May 1915; [8] “In the Wolf’s Den,” released 24 May 1915; [9] “The Iron Hand of the Law,” released 31 May 1915; [10] “The Inspiring Sword,” released 7 June 1915; [11] “The Valley of the Shadow,” released 14 June 1915; [12] “The Sacrifice,” released 21 June 1915; [13] “The Man Who Did Not Die,” released 28 June 1915; [14] “A Story of the Past,” released 5 July 1915; [15] “The Coming of the Kingdom,” released 12 July 1915.

Jim must navigate a web of crime involving the gambler Davis and his unknown accomplice, the Burglar. The story involves high-stakes tension within a household, featuring Margaret and Mrs. Wilson.