sentences:  The series remained essentially alone in its choice of subject matter for most of the 1940s but eventually inspired a host of imitators, including Jack Kirby and Joe Simon's "Headline Comics" and "Real Clue" for Hillman Periodicals (1947), Marvel's "Official True Crime Cases" (1947), DC's "Gang Busters" (1947), and Fox's "Crimes by Women" (1948).In response, Gleason and Biro ran attack ads in their own comics and launched a companion title to "Crime Does Not Pay", called "Crime and Punishment", in 1948.However, 1948 also saw more publishers enter the genre, with the result that, by one estimate "thirty different crime comics were on the stands by the end of 1948 and by 1949 roughly one in seven comics was a crime comics."