'In The Radium Terrors the villain exposes wealthy individuals to radium so that they will have to pay extortionate priced to be cured of radiation poisoning. There is a private detective, Gifford Renwick, who chases around trying to put an end to all of this, but who is repeatedly side-tracked by his chivalrous ministrations to three women involved in the case. Dorrington locates the center for all of the mischief in the novel in Dr. Teroni Tsarka whom he identifies as a master criminal.'
Source: Panek, LeRoy Lad. After Sherlock Holmes: The Evolution of British and American Detective Stories. North Carolina: McFarland, 2014.