Edgar Uolles is one of the most popular writers of the early 20th century. He was born in Greenwich, into a family of actors. Having left school at the age of 12, he moved from one job to another until he was 18, after which he joined the army. In 1896, Edgar went to South Africa, where he served in medical units. After demobilization, he worked as a correspondent for the Wraiter agency and the London Daily Mail, and in 1901 he became an editor of a newspaper in Johannesburg. Wallace's first novels did not cover their financial costs. Commercial success came to him in the 1910s, and in the 1920s he became the most published English writer (every fourth book published was his novel). Wallace wrote 173 novels, 23 plays, and more than 1,000 short stories; Edgar did not interrupt his journalistic activities. 170 films were made based on Wallace's works. The writer died in Hollywood while working on the script for the famous "King Kong". This volume contains two novels by Wallace: "The Blue Hand" (1925) and "The Secret of the Yellow Daffodils" (1926), which were part of a series called "The Four Just".