 The killing took place a few days after the "Wentworth Castle", one of the company's liners, caught fire and sank with the loss of more than 400 lives.Once again, Wong is given important information by the leader of a powerful tong (Chinese secret society) that leads him to other suspects.The tong leader tells Wong that a member of the tong was smuggling a great amount of tong money into the United States aboard the Wentworth Castle.