Penny dreadfuls were cheap popular serial literature produced during the nineteenth century in the United Kingdom. The pejorative term is roughly interchangeable with penny horrible, penny awful, and penny blood. The term typically referred to a story published in weekly parts of 8 to 16 pages, each costing one penny. The subject matter of these stories was typically sensational, focusing on the exploits of detectives, criminals, or supernatural entities. First published in the 1830s, penny dreadfuls featured characters such as Sweeney Todd, Dick Turpin and Varney the Vampire. The Guardian described penny dreadfuls as "Britain’s first taste of mass-produced popular culture for the young."