The king is angry upon learning that his ministers have not demolished houses to stem the fire and promises compensation to the householders. Sarah is caught by the Duke of Hanford trying to steal the box but on hearing that she is being blackmailed by Denton, who has her son held hostage in Newgate, lets her escape. However, Denton breaks into the house and kills the duke, acquiring the document that names the king's brother James as part of the conspiracy. James explains that all he wants is for the king to convert to Catholicism and also encourages him to be seen to take an active part in the fire-fighting. Thomas learns that David is in Newgate and, just as the fire reaches the jail, rescues him and Vincent, who takes the child to Moorfields. He also catches up with Sarah and they go on the run after Denton has issued an arrest warrant, claiming that they started the fire as part of the plot to kill the king.
