The name of these prints is self-explaining: they cost a penny, and typically had sensational topics such as crime, ghosts of the supernatural. Popular stories that first appeared as a penny dreadful were Sweeney Todd or Varney the Vampire. The most popular series was written by George W. M. Reynolds, who drew his inspiration from the London slums. His Mysteries of London took a time span of 12 subsequent years; 624 numbers were published, selling up to 250,000 copies a week.
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