After you talked to Grunk, it should have told you to go back and find either Watson on the roof of Scotland Yard or Sherlock Bones in the Royal Museum (can't remember just now). But you need to go find one of them to pick up your quest.
:-) :-)Okay like the person up said goto sherlock bones in the museum and they will send you to counterweight east and west and then you goto big ben and then mooshu
