 Six months later in Rome , Caecilius 's family are shown to be successful . He is running a profitable business , Evelina has a social life in comparison to her seclusion in Pompeii , and his son Quintus is studying to become a doctor . Before Quintus leaves , he pays tribute to the family 's household gods ( in marked contrast to his disrespectful attitude towards them at the start of the episode ) , a bas relief depiction of which are in the form of the Doctor , Donna and the TARDIS . 
