The hero, the discharged Army Captain Reginald Hex, was the prototype for Anthony Newland, whose adventures were related several years later in The Brigand (Hodder & Stoughton, London, 1927). The first two Hex stories were revised and published as Anthony Newland stories in that collection under the titles Buried Treasure and A Contribution to Charity.
In total Wallace is credited with over 170 novels, almost 1,000 short stories, and 18 stage plays.