Who or what was Spring heeled Jack? This book explores most of the major theories of possible origins of this Victorian legend. Was he a mad genius prankster, scientist, alien, ghost, animal, automaton, or the devil himself? With all of today's fantastic characters, creatures, and machines, SHJ might not seem all that incredible. However, if you had lived during the period he lurked about and was misfortunate enough to encounter him, it might have been a life-altering experience. Several were witness to this never-explained phenomenon and affected by it greatly. Regress back to the gas lit, horse and buggy days with fictional characters, but remember, Spring heeled Jack was the REAL deal.