Since the events of September 11, 2001 in the United States, Western Muslim communities have been placed under a social and political microscope. Omar Bakri Muhammad and his organization al-Muhajiroun, based in London from the mid-1990s until 2004, endorsed militant jihad and generated a very public profile as the voice of 'Islamism' in the United Kingdom. Al-Muhajiroun's tenure in the United Kingdom spanned a crucial decade in international relations and the organization acted as a lightening rod for the debates surrounding Islamism in the West. Drawing on interviews with Bakri, British Muslims and the Call to Global Jihad explores the ways in which al-Muhajiroun attempted, and ultimately failed, to 'walk the line' between Islamism and life in a Western state.