from the moment nancy drew and his friend are aboard
she saw a man in the pier making a signals with someone on board. she knows about that language but at that time she quit not remember all the sign except the letters that appears on her name and she is quit sure that the man in the pier says BEWARE OF NANCY DREW AND NE the question is who is NE?

from then the mystery got started..

the second mystery was when nancy recieved the wrong trunk..