‘The Terror of London’: Spring-heeled Jack and the Victorian Metropolitan Press, 29 January 2015, The Vaults Bar, Dirty Dicks, London

Karl Bell gives a talk on Spring-heeled Jack, the monster of Victorian urban legend who was further disseminated by melodramas and penny dreadful, and perhaps fuelled the development of vampire fiction (through Varney and other figures).

For more information, the Wikipedia article on Spring-heeled Jack seems reliable and authoritative.