The Phantom Drive (a gravity beam) was brought on-line to link it (directly through the Earth""s core) with the World Engine on the other side of the world, causing massive panic and destruction in the city.He researched genealogical documents in the Hall of Records (and also surreptitiously gathered an enemies list).[Note: Dreiser based his story upon the sensational Chester Gillette and Grace Brown 1906 murder case in the state of New York.The Joker first circled around "Harvey""s squeeze" Rachel and intimidated her with a knife as he told her another version of his facial scarring.