The distaff side
In 1951 two British government officials, Donald Maclean and Guy Burgess, left on a boat sailing from Southampton to France and then disappeared. Though there were suspicions that they had defected to the Soviet Union, this wasn't confirmed until five years later when they appeard at a press conference in Moscow. In the years after this it became clear that they were not the only two British "gentlemen" to have been recruited by the KGB, there were at least 3 others and they all became known as the Cambridge Five.