chunk: Taking advantage of a thick fog, Davies navigates them covertly through the complicated sandbanks in a small boat to investigate the site. Carruthers investigates the island. He overhears Von Bruning and Dollmann discussing something more than treasure hunting, including cryptic references to "Chatham", "Seven" and "the tide serving". The pair return through the fog to the Dulcibella. There, they find Dollmann and Von Bruning have beaten them and are seemingly suspicious.