In May, 1905, a cleaning woman named Julia McGlone was leaving her workplace early one morning when a figure leapt down and assaulted her. The shadowy attacker left her with scratches all over her face and neck. McGlone screamed for a policeman who rushed to her aid. The policeman pulled a gun on the attacker, who "blew blue flames" into his face and leapt up a flight of stairs in a single bound, making his escape. This was only one of a series of attacks perpetrated by a tall, thin man in shining metallic clothing.
The descriptions of the Philadelphia prowler in 1905 tally up admirably well with the reports of a similarly-dressed and highly agile attacker in London, England who was recorded from as far back as 1837. He had a similar propensity for dazzling his victims with a bluish flame and making his escape before capture. The prowler was known as Springheeled Jack, and predated by half a century reports of another Jack stalking the London streets.