Souad Mekhennet's new book "I Was Told to Come Alone" chronicles her work in covering terrorists including being first journalist to identify "Jihad John". Her work often finds her interviewing terrorists on their turf at great risk to her own safety.
http://accesswdun.com/article/2017/6/548233/listen-reporter-who-first-identified-jihad-john-discusses-her-experiences-with-isis-and-al-qaeda