Caves of Terror — Talbot Mundy

British agent Athelstan King and American Greg Ramsden match wits with a Hindu mahatma and Yasmini, a mysterious princess, as King and Ramsden try to block a plot to free India from British rule. Their pursuit of the conspiracy takes them into underground caves populated by underfed crocodiles and panthers, as well as Hindu holy men conducting incredible experiments in telepathy, clairvoyance, and much more! A thrilling novel.