 Patricia agrees to investigate the mystery with Pelley, and they speak to Norman's friend Chalky, who was with Edward the night he was presumed to have died.Chalky gives them a couple of leads, and when Pelley follows up one at a travel agency he meets Guy Sinclair who works there and whom Pelly recognises as one of the three men who knocked him out by his voice.It becomes clear that the three men - Sinclair, a thug called Mickey and their leader, Otto - are involved in a smuggling ring, and Pelley manages to get hold of a book which, although in code, incriminates all three men in the smuggling racket.