"Steel" Callaghan is in the Northwest Frontier of India where "his new task is to track down a Haji who was suspected of plotting an insurrection against the British". "A battle of wits between Briton and Asiatic." "For the sake of Empire it is vital that information shall be gained of a threatened insurrection by the Haji against British rule, and for this task, for which many a brave man might shrink, "Steel" Callaghan is selected. He and Yusuf, his lieutenant, beard the Haji in his den, taking their lives in their lands, and how they come out on top in a maze of intrigue is told in Mr. Chesney's best style."