In the first episode of the sixth series, fellow officer Zafar Younis (Raza Jaffrey) is kidnapped by mercenaries. When she hears that French Intelligence have a lead on his whereabouts, Adam gives her 24 hours. However, it is revealed the lead was a ruse and she is kidnapped by a shadow organisation known as Yalta which has agents in governments and judiciaries in the whole world. Opposed to American hegemony in the world, they support its enemies such as the Russians and, more recently, the Iranians. They torture her as a way of recruiting her; they also convince her that the United States government is manipulating the United Kingdom during peace deals with Iran. Towards the end of the series, Section D and the CIA are made aware of Yalta. In the eighth episode, CIA liaison Bob Hogan (Matthew Marsh) begins to systematically kill known members. Ros reveals herself as a member to Section D, but wants to help them in stopping Yalta's plans, which is revealed to be setting off a logic bomb against the American defense satellite network. Though Adam and Malcolm Wynn-Jones (Hugh Simon) stop the attack, one of Yalta's high-ranking members, Juliet Shaw (Anna Chancellor) supposedly kills Ros for her betrayal by injecting her with poison. During her funeral however, Adam revives her and reveals he switched the poison with a sedative to fake her death beforehand. In the end of the episode, Ros walks away with a new identity to protect herself from further Yalta retribution.