(from the back of the book)
What happens if the dead, but sleeping Cthulhu meets the city that never sleeps? New York - Im Schatten der Wolkenkratzer ("in the shade of the skyscrapers") gives the answer! The extensive sourcebook describes the five districts of Manhattan, Brooklyn, the Bronx, Queens and Staten Island so colorful that you find not only numerous real and fictive places of interest and plot hooks for uncanny adventures, but are invited to settle the PCs here firmly and to let them become a part of the pulsating moloch. The attached road map of Manhattan also serves this purpose. Special attention is given to the organised crime of the mafia, which raises her ugly head before the background of the prohibition particularly in New York. This book contains all necessary material to bring characters with a crime background into the play and to experience adventure with relation to the organised crime.
Included are also three ready to play adventures not formely released, that involve the characters intensely in the secrets of New York.