White slave

“I see. And you’re now going to tell me that Bertha Gotobed was got hold of by the White Slave people.” “How did you know?” asked Parker, a little peevishly. “Because Scotland Yard have two maggots which crop up whenever anything happens to a young woman. Either it’s White Slavery or Dope Dens⁠—sometimes both. You are going to say it’s both.”