After an operation in Paris failed on her watch, CIA interrogation officer Alice Racine now works in an undercover capacity at a community centre in London. The area is a known location for Islamic extremism, and information she discovers in her capacity at the centre is passed on to the security services, including MI5 Intelligence Chief Emily Knowles. Her former station chief and mentor Eric Lasch meets with her, and tells her that she shouldn’t feel guilty for the failed operation (which resulted in Algerian suicide bombers killing 24 people) and that she needs to get back into the field. Meanwhile, the Central Intelligence Agency and MI5 receive intel that radical preacher Imam Yazid Khaleel is planning a biological weapon on an American target on British soil in collaboration with terrorist and American born Religious conversion David Mercer. Racine is approached by Frank Sutter, an officer from the CIA’s London Station, who tells her she has orders from Europe Division Chief Bob Hunter to help them interrogate and break Khaleel’s courier they have captured.