In 1940, the Dents returned to La Plata for good. Dent continued to write for "Doc Savage", but also found time to work in the other genres. His post-1941 Doc Savage work benefited from this; the later Savage novels are known for their tighter plotting, improved dialogue, and a shift towards mystery instead of super-science. Doc Savage himself begins to shed his superhuman image, and to show a more fallible, human side. Dent may have recycled some generic detective stories as Doc tales; "King Joe Cay" features Doc working alone, in disguise, with no aides, gadgets, or headquarters, and an interest in the ladies.