In Chapter 7 of Man In The Iron Mask of Dumas Aramis and Porthos were using the time they had from Fougeut to leave France. Porthos didn't know what was going on but still went with Aramis. With Athos he was visted by the Duke Beaufort because he want Athos son Raoul to become an officer. While they were arguing Raoul heared what they were saying and his father that he wanted to be an offier. Athos knew he couldn't keep his son forever so he let him go. Athos meet a fisherman and told him that two people he meet threaten to bring them to St.Marguerite but he didn't want to so he jumped off the boat. When Athos and Raoul heard about it Athos knew it was D'Artagnan so they went to St.marguerite. When they went there they saw a note which said " I am the brother of the King of France: a prisoner today, a madman tomorrow. French gentalman and Christians, pray to God for the soul and reason of your master ". When they finish reading the letter they saw D'Artagnan and took the letter they went to the government to explain what is happening. D'Artagnan explain to Athos and Raoul that the King didn't want anyone to see the prisoner because D'Artagnan think that is they saw they would die. So the hide so they can see the prisoner who in an iron mask dressed in black. Soon the iron door close on him.