Begin the quest by speaking to Edan Cosca in the back room of Club Hypnotique. He asks you to retrieve blueprints from a thief in the alley outside Hypnotique. Go outside the doors to the right, and move to the north-east towards the exit. Go around the corner to the west and enter the back alley. Move to the north and approach the Alley Vamp and kill him. Pick up the blueprints and get them back to Edan Cosca. Quest complete!