Season 4
Episode 7 - SYRIA

A Syrian diplomat indicates that he would like to begin secret talks with the UK. Fiona volunteers to go undercover and liaise with the diplomat but Adam is concerned. Years ago, Fiona was locked in a disastrous marriage with a Syrian secret service officer, Farook. Adam saved her from her horrible fate by framing Farook, which resulted in his execution. Ever since, Fiona has lived under an alias to avoid detection by the Syrians. Inquiries are made and since no one from her past has been located, Fiona is allowed to make contact. As the team prepare to work covertly with the diplomat, it becomes clear that Fiona has another agenda: she has discovered that her first husband is still alive and looking for her.